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CVE-2026-14957

FIPS mode assertion failure via malicious CERT payload

7.5 HighFix available

In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.47%Down 0.1 points since Sep 2, 2026
90%50%10%1%

What each source reports

CVE List Score used 7.5

FIPS mode assertion failure via malicious CERT payload

In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.

Record
CVE-2026-14957
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-617, CWE-252
Updated
2026-11-02
EUVDEUVD-2026-69820 7.5

In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.

Record
EUVD-2026-69820
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-x2hf-3rgr-r89x 7.5

In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts...

In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.

Record
GHSA-x2hf-3rgr-r89x
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-252
Updated
2026-11-02
NVD 7.5

In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.

Record
CVE-2026-14957
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-252, CWE-617
Updated
2026-11-02
OSVALPINE-CVE-2026-14957 7.5

In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.

Record
ALPINE-CVE-2026-14957
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
OSVDEBIAN-CVE-2026-14957 7.5

In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.

Record
DEBIAN-CVE-2026-14957
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 23 moreShow less
OSVOESA-2026-3299 7.5

libreswan security update

Libreswan is an implementation of IKEv1 and IKEv2 for IPsec. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks. Everything passing through the untrusted net is encrypted by the ipsec gateway machine and decrypted by the gateway at the other end of the tunnel. The resulting tunnel is a virtual private network or VPN.

Security Fix(es):

A flaw was found in libreswan. A badly formatted X.509 certificate can cause an assertion failure (CWE-617) that crashes the pluto daemon process, leading to a denial of service.(CVE-2026-14957)

Record
OESA-2026-3299
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:46396 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:46396
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:46397 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:46397
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:46398 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:46398
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:46986 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:46986
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:55449 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:55449
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:57741 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:57741
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:61258 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:61258
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:61779 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:61779
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:72287 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:72287
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:82154 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:82154
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:84887 7.5

Red Hat Security Advisory: libreswan security update

Record
RHSA-2026:84887
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRLSA-2026:46396 7.5

Important: libreswan security update

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).

Security Fix(es):

  • librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (CVE-2026-50721)

  • librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (CVE-2026-50722)

  • librenswan: IKEv2 Denial of Service via malformed fragmentation (CVE-2026-12413)

  • libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process (CVE-2026-14957)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
RLSA-2026:46396
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRLSA-2026:46397 7.5

Important: libreswan security update

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).

Security Fix(es):

  • librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (CVE-2026-50721)

  • librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (CVE-2026-50722)

  • librenswan: IKEv2 Denial of Service via malformed fragmentation (CVE-2026-12413)

  • libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process (CVE-2026-14957)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
RLSA-2026:46397
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRLSA-2026:46398 7.5

Important: libreswan security update

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).

Security Fix(es):

  • librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (CVE-2026-50721)

  • librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (CVE-2026-50722)

  • librenswan: IKEv2 Denial of Service via malformed fragmentation (CVE-2026-12413)

  • libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process (CVE-2026-14957)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
RLSA-2026:46398
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-14957 7.5

In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.

Record
UBUNTU-CVE-2026-14957
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVALSA-2026:46396 No score

Important: libreswan security update

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).

Security Fix(es):

  • librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (CVE-2026-50721)
  • librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (CVE-2026-50722)
  • librenswan: IKEv2 Denial of Service via malformed fragmentation (CVE-2026-12413)
  • libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process (CVE-2026-14957)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
ALSA-2026:46396
Updated
2026-11-02
OSVALSA-2026:46397 No score

Important: libreswan security update

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).

Security Fix(es):

  • librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (CVE-2026-50721)
  • librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (CVE-2026-50722)
  • librenswan: IKEv2 Denial of Service via malformed fragmentation (CVE-2026-12413)
  • libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process (CVE-2026-14957)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
ALSA-2026:46397
Updated
2026-11-02
OSVALSA-2026:46398 No score

Important: libreswan security update

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).

Security Fix(es):

  • librenswan: IKEv1 Denial of Service via RSA-SHA1 (PKCS#1 Version 1.5 Encrypted) authentication payload (CVE-2026-50721)
  • librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload (CVE-2026-50722)
  • librenswan: IKEv2 Denial of Service via malformed fragmentation (CVE-2026-12413)
  • libreswan: badly formatted X.509 certificate can cause an assertion failure that crashes the daemon process (CVE-2026-14957)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Record
ALSA-2026:46398
Updated
2026-11-02
OSVAZL-98441 No score

CVE-2026-14957 affecting package libreswan for versions less than 4.15-3

In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.

Record
AZL-98441
Updated
2026-11-02
OSVCLSA-2026-1785422092 No score

libreswan: Fix of CVE-2026-14957

  • CVE-2026-14957: fix a remotely triggerable assertion failure in add_decoded_cert() when the peer certificate public key cannot be extracted
Record
CLSA-2026-1785422092
Updated
2026-11-02
OSVCLSA-2026-1785496521 No score

libreswan: Fix of CVE-2026-14957

  • CVE-2026-14957: fix a remotely triggerable assertion failure in add_decoded_cert() when the peer certificate public key cannot be extracted in FIPS mode
Record
CLSA-2026-1785496521
Updated
2026-11-02
OSVMGASA-2026-0456 No score

Updated libreswan package fixes a security vulnerability

FIPS mode assertion failure via malicious CERT payload. (CVE-2026-14957)

Record
MGASA-2026-0456
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libreswan
Alpine:v3.23
 before 5.3.3-r0
5.3.3-r0
libreswan
Alpine:v3.24
 before 5.3.2-r0
5.3.2-r0
libreswan
AlmaLinux:8
 before 4.12-2.el8_10.6
4.12-2.el8_10.6
libreswan
AlmaLinux:9
 before 4.15-10.el9_8
4.15-10.el9_8
libreswan
AlmaLinux:10
 before 5.3.2-1.el10_2
5.3.2-1.el10_2
libreswan-minimal
AlmaLinux:10
 before 5.3.2-1.el10_2
5.3.2-1.el10_2
libreswan
Azure Linux:3
 before 4.15-3
4.15-3
libreswan
TuxCare:AlmaLinux:9.2
 before 4.12-2.el9_2.tuxcare.els5
4.12-2.el9_2.tuxcare.els5
libreswan
TuxCare:AlmaLinux:9.6
 before 4.15-8.el9_6.tuxcare.els4
4.15-8.el9_6.tuxcare.els4
libreswan
Debian:12
 All versions, plus listed versions
4.10-24.10-2+deb12u14.11-14.12-14.12-2
Show 13 moreShow less
4.12-34.14-14.14-1.14.15-15.0~rc2-15.0~rc2-25.2-15.2-25.2-2.15.2-2.25.2-2.35.2-2.45.2-2.5
 None known
Show 40 moreShow less
Affected packages
PackageAffectedFixed
libreswan
Debian:13
 All versions, plus listed versions
5.2-2.25.2-2.35.2-2.45.2-2.5
 None known
libreswan
Debian:14
 before 5.2-2.5, plus listed versions
5.2-2.25.2-2.35.2-2.4
5.2-2.5
libreswan
Mageia:10
 before 5.3-1.1.mga10
5.3-1.1.mga10
libreswan
openEuler:24.03-LTS-SP3
 before 4.15-4.oe2403sp3
4.15-4.oe2403sp3
libreswan
openEuler:24.03-LTS-SP4
 before 4.15-4.oe2403sp4
4.15-4.oe2403sp4
libreswan
openEuler:20.03-LTS-SP4
 before 4.15-4.oe2003sp4
4.15-4.oe2003sp4
libreswan
openEuler:22.03-LTS-SP4
 before 4.15-4.oe2203sp4
4.15-4.oe2203sp4
libreswan
openEuler:24.03-LTS-SP1
 before 4.15-4.oe2403sp1
4.15-4.oe2403sp1
libreswan
Red Hat:enterprise_linux:8::appstream
 before 0:4.12-2.el8_10.6
0:4.12-2.el8_10.6
libreswan-debuginfo
Red Hat:enterprise_linux:8::appstream
 before 0:4.12-2.el8_10.6
0:4.12-2.el8_10.6
libreswan-debugsource
Red Hat:enterprise_linux:8::appstream
 before 0:4.12-2.el8_10.6
0:4.12-2.el8_10.6
libreswan
Red Hat:enterprise_linux:9::appstream
 before 0:4.15-10.el9_8
0:4.15-10.el9_8
libreswan-debuginfo
Red Hat:enterprise_linux:9::appstream
 before 0:4.15-10.el9_8
0:4.15-10.el9_8
libreswan-debugsource
Red Hat:enterprise_linux:9::appstream
 before 0:4.15-10.el9_8
0:4.15-10.el9_8
libreswan
Red Hat:enterprise_linux:10.2
 before 0:5.3.2-1.el10_2
0:5.3.2-1.el10_2
libreswan-debugsource
Red Hat:enterprise_linux:10.2
 before 0:5.3.2-1.el10_2
0:5.3.2-1.el10_2
libreswan-minimal
Red Hat:enterprise_linux:10.2
 before 0:5.3.2-1.el10_2
0:5.3.2-1.el10_2
libreswan-minimal-debuginfo
Red Hat:enterprise_linux:10.2
 before 0:5.3.2-1.el10_2
0:5.3.2-1.el10_2
libreswan
Red Hat:enterprise_linux:9::fastdatapath
 before 0:5.3.2-1.el9fdp
0:5.3.2-1.el9fdp
libreswan-debuginfo
Red Hat:enterprise_linux:9::fastdatapath
 before 0:5.3.2-1.el9fdp
0:5.3.2-1.el9fdp
libreswan-debugsource
Red Hat:enterprise_linux:9::fastdatapath
 before 0:5.3.2-1.el9fdp
0:5.3.2-1.el9fdp
libreswan
Red Hat:enterprise_linux_eus:10.0
 before 0:5.2-1.el10_0.5
0:5.2-1.el10_0.5
libreswan
Red Hat:rhel_eus:9.6::appstream
 before 0:4.15-8.el9_6.1
0:4.15-8.el9_6.1
libreswan
Red Hat:rhel_e4s:9.4::appstream
 before 0:4.12-3.el9_4.2
0:4.12-3.el9_4.2
libreswan
Red Hat:rhel_e4s:9.2::appstream
 before 0:4.9-5.el9_2.5
0:4.9-5.el9_2.5
libreswan
Red Hat:rhel_e4s:8.8::appstream
 before 0:4.9-3.el8_8.3
0:4.9-3.el8_8.3
libreswan
Red Hat:rhel_tus:8.8::appstream
 before 0:4.9-3.el8_8.3
0:4.9-3.el8_8.3
libreswan
Red Hat:rhel_aus:8.6::appstream
 before 0:4.5-1.el8_6.6
0:4.5-1.el8_6.6
libreswan
Red Hat:rhel_eus_long_life:8.6::appstream
 before 0:4.5-1.el8_6.6
0:4.5-1.el8_6.6
libreswan
Red Hat:rhel_aus:8.4::appstream
 before 0:4.3-6.el8_4.2
0:4.3-6.el8_4.2
libreswan
Red Hat:rhel_eus_long_life:8.4::appstream
 before 0:4.3-6.el8_4.2
0:4.3-6.el8_4.2
libreswan
Rocky Linux:8
 before 0:4.12-2.el8_10.6
0:4.12-2.el8_10.6
libreswan
Rocky Linux:9
 before 0:4.15-10.el9_8
0:4.15-10.el9_8
libreswan
Rocky Linux:10
 before 0:5.3.2-1.el10_2
0:5.3.2-1.el10_2
libreswan
Ubuntu:18.04:LTS
 All versions, plus listed versions
3.20-7build13.21-23.22-13.22-23.22-33.22-43.23-13.23-4
 None known
libreswan
Ubuntu:20.04:LTS
 All versions, plus listed versions
3.29-23.29-2build1
 None known
libreswan
Ubuntu:22.04:LTS
 All versions, plus listed versions
3.32-3ubuntu3
 None known
libreswan
Ubuntu:24.04:LTS
 All versions, plus listed versions
4.11-1ubuntu14.12-1ubuntu14.14-1ubuntu14.14-1ubuntu2
 None known
libreswan
Ubuntu:26.10
 All versions, plus listed versions
5.2-2.2ubuntu2
 None known
libreswan
Ubuntu:26.04:LTS
 All versions, plus listed versions
5.2-2.2ubuntu15.2-2.2ubuntu2
 None known

History

History
RecordedChangedSources
affected, aliases, referencesOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-14957 is a high vulnerability (CVSS 7.5) in The Libreswan Project Libreswan, published July 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 40th percentile. Fixed in libreswan 5.3.3-r0.

References

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