CVE-2026-63650

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be...

2.0 Low

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: Low
User interaction: Active

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.23%Down 0.1 points since Aug 15, 2026

What each source reports

CVE List Score used 2.0

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Record: CVE-2026-63650
CVSS 4.0: 2.0 LowCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Weakness: CWE-295, CWE-115
Updated: 2026-11-02

EUVDEUVD-2026-58813 2.0

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Record: EUVD-2026-58813
CVSS 4.0: 2.0 LowCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-f94x-h63g-g9m8 2.0

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be...

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Record: GHSA-f94x-h63g-g9m8
CVSS 4.0: 2.0 LowCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-115
Updated: 2026-11-02

NVD 2.0

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Record: CVE-2026-63650
CVSS 4.0: 2.0 LowCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-115, CWE-295
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-63650 2.0

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Record: DEBIAN-CVE-2026-63650
CVSS 4.0: 2.0 LowCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-63650 2.0

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Record: UBUNTU-CVE-2026-63650
CVSS 4.0: 2.0 LowCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Updated: 2026-11-02

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OSVopenSUSE-SU-2026:22072-1 No score

Security update for openvpn

This update for openvpn fixes the following issues:

CVE-2026-11771: NTLM proxy auth stack off-by-one write (bsc#1273126).
CVE-2026-12932: memory leak using --tls-crypt-v2 (bsc#1273127).
CVE-2026-12996: Potential DoS and memory leak via TLS session use-after-free (bsc#1273128).
CVE-2026-13117: Heap use-after-free via incomplete guard in check_session_buf_not_used() (bsc#1273129).
CVE-2026-13379: Windows interactive service DNS SearchList state pollution (bsc#1273130).
CVE-2026-35058: improper validation of packet length can lead to a denial of service (bsc#1267945).
CVE-2026-40215: race condition during TLS session promotion can lead to a use-after-free (bsc#1267944).
CVE-2026-63650: OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field (bsc#1275310).
CVE-2026-84732: Remote Denial of Service via crafted ACK packets (bsc#1279613).

Record: openSUSE-SU-2026:22072-1
Updated: 2026-11-02

OSVSUSE-SU-2026:24220-1 No score

Security update for openvpn

This update for openvpn fixes the following issues:

CVE-2026-11771: NTLM proxy auth stack off-by-one write (bsc#1273126).
CVE-2026-12932: memory leak using --tls-crypt-v2 (bsc#1273127).
CVE-2026-12996: Potential DoS and memory leak via TLS session use-after-free (bsc#1273128).
CVE-2026-13117: Heap use-after-free via incomplete guard in check_session_buf_not_used() (bsc#1273129).
CVE-2026-13379: Windows interactive service DNS SearchList state pollution (bsc#1273130).
CVE-2026-35058: improper validation of packet length can lead to a denial of service (bsc#1267945).
CVE-2026-40215: race condition during TLS session promotion can lead to a use-after-free (bsc#1267944).
CVE-2026-63650: OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field (bsc#1275310).
CVE-2026-84732: Remote Denial of Service via crafted ACK packets (bsc#1279613).

Record: SUSE-SU-2026:24220-1
Updated: 2026-11-02

OSVSUSE-SU-2026:4213-1 No score

Security update for openvpn

This update for openvpn fixes the following issues:

CVE-2026-63650: OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field (bsc#1275310).
CVE-2026-84732: Remote Denial of Service via crafted ACK packets (bsc#1279613).

Record: SUSE-SU-2026:4213-1
Updated: 2026-11-02

OSVSUSE-SU-2026:4217-1 No score

Security update for openvpn

This update for openvpn fixes the following issues:

CVE-2026-63650: OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field (bsc#1275310).
CVE-2026-84732: Remote Denial of Service via crafted ACK packets (bsc#1279613).

Record: SUSE-SU-2026:4217-1
Updated: 2026-11-02

Affected products

openvpn

Affected packages

Affected packages
Package	Affected	Fixed
`openvpn` Debian:12	All versions, plus listed versions 2.6.11-12.6.12-12.6.13-12.6.14-0+deb12u12.6.14-0+deb12u2 Show 38 moreShow less 2.6.14-12.6.14-22.6.15-12.6.3-12.6.3-1+deb12u12.6.3-1+deb12u1~bpo11+12.6.3-1+deb12u22.6.3-1+deb12u2~bpo11+12.6.3-1+deb12u32.6.3-1+deb12u42.6.3-22.6.3-2.12.6.7-12.6.9-12.7.0-12.7.0-1~bpo13+12.7.0~alpha1-12.7.0~alpha2-12.7.0~alpha3-12.7.0~beta1-12.7.0~beta2-12.7.0~beta3-12.7.0~rc1-12.7.0~rc2-12.7.0~rc2-22.7.0~rc3-12.7.0~rc4-12.7.0~rc5-12.7.0~rc6-12.7.1-12.7.1-1~bpo13+12.7.2-12.7.2-1~bpo13+12.7.3-12.7.5-12.7.5-1~bpo13+12.7.7-12.7.7-1~bpo13+1	None known
`openvpn` Debian:13	All versions, plus listed versions 2.6.14-12.6.14-1+deb13u12.6.14-1+deb13u22.6.14-1+deb13u32.6.14-2 Show 25 moreShow less 2.6.15-12.7.0-12.7.0-1~bpo13+12.7.0~alpha1-12.7.0~alpha2-12.7.0~alpha3-12.7.0~beta1-12.7.0~beta2-12.7.0~beta3-12.7.0~rc1-12.7.0~rc2-12.7.0~rc2-22.7.0~rc3-12.7.0~rc4-12.7.0~rc5-12.7.0~rc6-12.7.1-12.7.1-1~bpo13+12.7.2-12.7.2-1~bpo13+12.7.3-12.7.5-12.7.5-1~bpo13+12.7.7-12.7.7-1~bpo13+1	None known
`openvpn` Debian:14	All versions, plus listed versions 2.6.14-12.6.14-22.6.15-12.7.0-12.7.0-1~bpo13+1 Show 22 moreShow less 2.7.0~alpha1-12.7.0~alpha2-12.7.0~alpha3-12.7.0~beta1-12.7.0~beta2-12.7.0~beta3-12.7.0~rc1-12.7.0~rc2-12.7.0~rc2-22.7.0~rc3-12.7.0~rc4-12.7.0~rc5-12.7.0~rc6-12.7.1-12.7.1-1~bpo13+12.7.2-12.7.2-1~bpo13+12.7.3-12.7.5-12.7.5-1~bpo13+12.7.7-12.7.7-1~bpo13+1	None known
`openvpn` SUSE:Linux Enterprise Server 16.0 From an advisory covering 9 CVEs	before 2.6.10-160000.5.1	2.6.10-160000.5.1
`openvpn` SUSE:Linux Enterprise Server for SAP applications 16.0 From an advisory covering 9 CVEs	before 2.6.10-160000.5.1	2.6.10-160000.5.1
`openvpn` SUSE:Linux Enterprise Module for Basesystem 15 SP7 From an advisory covering 2 CVEs	before 2.6.10-150600.3.37.1	2.6.10-150600.3.37.1
`openvpn-dco` SUSE:Linux Enterprise Module for Basesystem 15 SP7 From an advisory covering 2 CVEs	before 2.6.10-150600.3.37.1	2.6.10-150600.3.37.1
`openvpn` SUSE:Linux Enterprise Server 15 SP6-LTSS From an advisory covering 2 CVEs	before 2.6.10-150600.3.37.1	2.6.10-150600.3.37.1
`openvpn-dco` SUSE:Linux Enterprise Server 15 SP6-LTSS From an advisory covering 2 CVEs	before 2.6.10-150600.3.37.1	2.6.10-150600.3.37.1
`openvpn` SUSE:Linux Enterprise Server for SAP Applications 15 SP6 From an advisory covering 2 CVEs	before 2.6.10-150600.3.37.1	2.6.10-150600.3.37.1

Show 10 moreShow less

Affected packages
Package	Affected	Fixed
`openvpn-dco` SUSE:Linux Enterprise Server for SAP Applications 15 SP6 From an advisory covering 2 CVEs	before 2.6.10-150600.3.37.1	2.6.10-150600.3.37.1
`openvpn` SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS From an advisory covering 2 CVEs	before 2.5.6-150400.3.28.1	2.5.6-150400.3.28.1
`openvpn` SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS From an advisory covering 2 CVEs	before 2.5.6-150400.3.28.1	2.5.6-150400.3.28.1
`openvpn` SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS From an advisory covering 2 CVEs	before 2.5.6-150400.3.28.1	2.5.6-150400.3.28.1
`openvpn` SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS From an advisory covering 2 CVEs	before 2.5.6-150400.3.28.1	2.5.6-150400.3.28.1
`openvpn` SUSE:Linux Enterprise Server 15 SP4-LTSS From an advisory covering 2 CVEs	before 2.5.6-150400.3.28.1	2.5.6-150400.3.28.1
`openvpn` SUSE:Linux Enterprise Server 15 SP5-LTSS From an advisory covering 2 CVEs	before 2.5.6-150400.3.28.1	2.5.6-150400.3.28.1
`openvpn` SUSE:Linux Enterprise Server for SAP Applications 15 SP4 From an advisory covering 2 CVEs	before 2.5.6-150400.3.28.1	2.5.6-150400.3.28.1
`openvpn` SUSE:Linux Enterprise Server for SAP Applications 15 SP5 From an advisory covering 2 CVEs	before 2.5.6-150400.3.28.1	2.5.6-150400.3.28.1
`openvpn` openSUSE:Leap 16.0 From an advisory covering 9 CVEs	before 2.6.10-160000.5.1	2.6.10-160000.5.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	affected
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

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

In short

CVE-2026-63650 is a low vulnerability (CVSS 2.0) in Openvpn, published August 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 13th percentile. No source names a fixed version.

References

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