{"id":"CVE-2026-77207","aliases":["ALPINE-CVE-2026-77207","ALSA-2026:89748","ALSA-2026:89923","ALSA-2026:90492","AZL-108033","CLSA-2026-1792158739","DEBIAN-CVE-2026-77207","EUVD-2026-100749","GHSA-jf6r-wr9w-j67c","RLSA-2026:89748","RLSA-2026:89923","RLSA-2026:90492","RLSA-2026:97878"],"status":"published","title":"Null Pointer Dereference in PKCS#7 bundle with no certificates","description":"Libreswan has a null pointer dereference bug in the PKCS#7 handling code for IKE certificate authentication. When libreswan decodes an IKE CERT payload of type CERT_PKCS7_WRAPPED_X509, it guards the PKCS#7 blob with SEC_PKCS7ContainsCertsOrCrls() and then iterates the certificate list with SEC_PKCS7GetCertificateList(). The two NSS APIs disagree on a SignedData that carries a CRL but no certificates: ContainsCertsOrCrls() returns PR_TRUE (there is a CRL), so the guard passes, but GetCertificateList() returns NULL (there are no certificates). This causes libreswan to dereference a null pointer leading to a crash and restart. A malicious IKE_AUTH packet can trigger this bug, meaning the peer does not need to be authenticated. No remote code execution is possible. Continued exploitation can cause a denial of service.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00463,"percentile":0.40542,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-252","CWE-476"],"published":"2026-10-13T21:28:19Z","modified":"2026-11-11T00:30:02Z","fixes":[{"ecosystem":"Alpine:v3.23","package":"libreswan","fixed_in":["5.3.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"libreswan","fixed_in":["5.3.3-r0"],"sources":["osv"]},{"ecosystem":"Azure Linux:3","package":"libreswan","fixed_in":["4.15-4"],"sources":["osv"]},{"ecosystem":"TuxCare:AlmaLinux:9.2","package":"libreswan","fixed_in":["4.12-2.el9_2.tuxcare.els6"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.23","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.3-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.3-r0"}]}]},{"source":"osv","ecosystem":"AlmaLinux:9","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15-11.el9_8"}]}],"bundled":3},{"source":"osv","ecosystem":"AlmaLinux:10","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.3-1.el10_2"}]}],"bundled":3},{"source":"osv","ecosystem":"AlmaLinux:10","package":"libreswan-minimal","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.3-1.el10_2"}]}],"bundled":3},{"source":"osv","ecosystem":"AlmaLinux:8","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12-2.el8_10.7"}]}],"bundled":3},{"source":"osv","ecosystem":"Azure Linux:3","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.15-4"}]}]},{"source":"osv","ecosystem":"TuxCare:AlmaLinux:9.2","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12-2.el9_2.tuxcare.els6"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.10-2","4.10-2+deb12u1","4.11-1","4.12-1","4.12-2","4.12-3","4.14-1","4.14-1.1","4.15-1","5.0~rc2-1","5.0~rc2-2","5.2-1","5.2-2","5.2-2.1","5.2-2.2","5.2-2.3","5.2-2.4","5.2-2.5"]},{"source":"osv","ecosystem":"Debian:13","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2-2.2","5.2-2.3","5.2-2.4","5.2-2.5"]},{"source":"osv","ecosystem":"Rocky Linux:9","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.15-11.el9_8"}]}],"bundled":3},{"source":"osv","ecosystem":"Rocky Linux:10","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:5.3.3-1.el10_2"}]}],"bundled":3},{"source":"osv","ecosystem":"Rocky Linux:8","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.12-2.el8_10.7"}]}],"bundled":3},{"source":"osv","ecosystem":"Rocky Linux:9","package":"libreswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.15-11.el9_8"}]}],"bundled":3}],"products":[{"vendor":"the libreswan project","product":"libreswan"},{"vendor":"the libreswan project (www.libreswan.org)","product":"libreswan"}],"references":[{"url":"https://libreswan.org/security/CVE-2026-77207/CVE-2026-77207.txt","tags":["vendor-advisory"]},{"url":"https://libreswan.org/security/CVE-2026-77207/","tags":["patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77207","tags":["web","advisory"]},{"url":"https://libreswan.org/security/CVE-2026-77207"},{"url":"https://github.com/advisories/GHSA-jf6r-wr9w-j67c"},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-77207","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:89748","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-77206","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-77207","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-94453","tags":["report"]},{"url":"https://bugzilla.redhat.com/2550254","tags":["report"]},{"url":"https://bugzilla.redhat.com/2550256","tags":["report"]},{"url":"https://bugzilla.redhat.com/2550258","tags":["report"]},{"url":"https://errata.almalinux.org/9/ALSA-2026-89748.html","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:89923","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-77205","tags":["report"]},{"url":"https://bugzilla.redhat.com/2550255","tags":["report"]},{"url":"https://errata.almalinux.org/10/ALSA-2026-89923.html","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:90492","tags":["advisory"]},{"url":"https://errata.almalinux.org/8/ALSA-2026-90492.html","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1792158739.html","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-77207","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2026:89748","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550254","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550256","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550258","tags":["report"]},{"url":"https://errata.rockylinux.org/RLSA-2026:89923","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2550255","tags":["report"]},{"url":"https://errata.rockylinux.org/RLSA-2026:90492","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2026:97878","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:97878","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-77207","title":"Null Pointer Dereference in PKCS#7 bundle with no certificates","description":"Libreswan has a null pointer dereference bug in the PKCS#7 handling code for IKE certificate authentication. When libreswan decodes an IKE CERT payload of type CERT_PKCS7_WRAPPED_X509, it guards the PKCS#7 blob with SEC_PKCS7ContainsCertsOrCrls() and then iterates the certificate list with SEC_PKCS7GetCertificateList(). The two NSS APIs disagree on a SignedData that carries a CRL but no certificates: ContainsCertsOrCrls() returns PR_TRUE (there is a CRL), so the guard passes, but GetCertificateList() returns NULL (there are no certificates). This causes libreswan to dereference a null pointer leading to a crash and restart. A malicious IKE_AUTH packet can trigger this bug, meaning the peer does not need to be authenticated. No remote code execution is possible. Continued exploitation can cause a denial of service.","status":"published","published":"2026-10-13T21:28:19.219Z","modified":"2026-10-16T15:31:53.986Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-476","CWE-252"],"updated_at":"2026-11-02T14:20:15.712761Z"}],"euvd":[{"id":"EUVD-2026-100749","description":"Libreswan has a null pointer dereference bug in the PKCS#7 handling code for IKE certificate authentication. When libreswan decodes an IKE CERT payload of type CERT_PKCS7_WRAPPED_X509, it guards the PKCS#7 blob with SEC_PKCS7ContainsCertsOrCrls() and then iterates the certificate list with SEC_PKCS7GetCertificateList(). The two NSS APIs disagree on a SignedData that carries a CRL but no certificates: ContainsCertsOrCrls() returns PR_TRUE (there is a CRL), so the guard passes, but GetCertificateList() returns NULL (there are no certificates). This causes libreswan to dereference a null pointer leading to a crash and restart. A malicious IKE_AUTH packet can trigger this bug, meaning the peer does not need to be authenticated. No remote code execution is possible. Continued exploitation can cause a denial of service.","status":"published","published":"2026-10-13T21:28:19Z","modified":"2026-10-16T15:31:53Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T17:00:05.229655Z"}],"ghsa":[{"id":"GHSA-jf6r-wr9w-j67c","title":"Libreswan has a null pointer dereference bug in the PKCS#7 handling code for IKE certificate...","description":"Libreswan has a null pointer dereference bug in the PKCS#7 handling code for IKE certificate authentication. When libreswan decodes an IKE CERT payload of type CERT_PKCS7_WRAPPED_X509, it guards the PKCS#7 blob with SEC_PKCS7ContainsCertsOrCrls() and then iterates the certificate list with SEC_PKCS7GetCertificateList(). The two NSS APIs disagree on a SignedData that carries a CRL but no certificates: ContainsCertsOrCrls() returns PR_TRUE (there is a CRL), so the guard passes, but GetCertificateList() returns NULL (there are no certificates). This causes libreswan to dereference a null pointer leading to a crash and restart. A malicious IKE_AUTH packet can trigger this bug, meaning the peer does not need to be authenticated. No remote code execution is possible. Continued exploitation can cause a denial of service.","status":"published","published":"2026-10-14T00:31:47Z","modified":"2026-10-14T00:31:55Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-252"],"updated_at":"2026-11-02T15:13:22.12395Z"}],"nvd":[{"id":"CVE-2026-77207","description":"Libreswan has a null pointer dereference bug in the PKCS#7 handling code for IKE certificate authentication. When libreswan decodes an IKE CERT payload of type CERT_PKCS7_WRAPPED_X509, it guards the PKCS#7 blob with SEC_PKCS7ContainsCertsOrCrls() and then iterates the certificate list with SEC_PKCS7GetCertificateList(). The two NSS APIs disagree on a SignedData that carries a CRL but no certificates: ContainsCertsOrCrls() returns PR_TRUE (there is a CRL), so the guard passes, but GetCertificateList() returns NULL (there are no certificates). This causes libreswan to dereference a null pointer leading to a crash and restart. A malicious IKE_AUTH packet can trigger this bug, meaning the peer does not need to be authenticated. No remote code execution is possible. Continued exploitation can cause a denial of service.","status":"published","published":"2026-10-13T22:18:26.04Z","modified":"2026-10-16T19:55:59.74Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-252","CWE-476"],"updated_at":"2026-11-02T14:12:58.630796Z"}],"osv":[{"id":"ALPINE-CVE-2026-77207","description":"Libreswan has a null pointer dereference bug in the PKCS#7 handling code for IKE certificate authentication. When libreswan decodes an IKE CERT payload of type CERT_PKCS7_WRAPPED_X509, it guards the PKCS#7 blob with SEC_PKCS7ContainsCertsOrCrls() and then iterates the certificate list with SEC_PKCS7GetCertificateList(). The two NSS APIs disagree on a SignedData that carries a CRL but no certificates: ContainsCertsOrCrls() returns PR_TRUE (there is a CRL), so the guard passes, but GetCertificateList() returns NULL (there are no certificates). This causes libreswan to dereference a null pointer leading to a crash and restart. A malicious IKE_AUTH packet can trigger this bug, meaning the peer does not need to be authenticated. No remote code execution is possible. Continued exploitation can cause a denial of service.","status":"published","published":"2026-10-13T22:18:26.04Z","modified":"2026-11-03T06:33:06.40471176Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T07:15:37.282377Z"},{"id":"DEBIAN-CVE-2026-77207","description":"Libreswan has a null pointer dereference bug in the PKCS#7 handling code for IKE certificate authentication. When libreswan decodes an IKE CERT payload of type CERT_PKCS7_WRAPPED_X509, it guards the PKCS#7 blob with SEC_PKCS7ContainsCertsOrCrls() and then iterates the certificate list with SEC_PKCS7GetCertificateList(). The two NSS APIs disagree on a SignedData that carries a CRL but no certificates: ContainsCertsOrCrls() returns PR_TRUE (there is a CRL), so the guard passes, but GetCertificateList() returns NULL (there are no certificates). This causes libreswan to dereference a null pointer leading to a crash and restart. A malicious IKE_AUTH packet can trigger this bug, meaning the peer does not need to be authenticated. No remote code execution is possible. Continued exploitation can cause a denial of service.","status":"published","published":"2026-10-13T22:18:26.04Z","modified":"2026-11-05T17:31:22.117134587Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-05T17:54:24.591011Z"},{"id":"RLSA-2026:89748","title":"Important: libreswan security update","description":"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).\n\nSecurity Fix(es):\n\n* libreswan: IKEv2 Use-After-Free bug when using IKE-over-TCP (CVE-2026-94453)\n\n* libreswan: IKEv2 pre-authentication Null Pointer deref in EAP code (CVE-2026-77206)\n\n* libreswan: Null Pointer Dereference in PKCS#7 bundle with no CERTS (CVE-2026-77207)\n\nFor 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.","status":"published","published":"2026-10-27T12:04:29.081572Z","modified":"2026-10-27T12:30:05.432064169Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.76659Z"},{"id":"RLSA-2026:89923","title":"Important: libreswan security update","description":"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).\n\nSecurity Fix(es):\n\n* libreswan: IKEv2 Use-After-Free bug when using IKE-over-TCP (CVE-2026-94453)\n\n* libreswan: Denial of Service via sending bogus X.509 certificates (CVE-2026-77205)\n\n* libreswan: Null Pointer Dereference in PKCS#7 bundle with no CERTS (CVE-2026-77207)\n\nFor 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.","status":"published","published":"2026-10-27T12:08:55.409043Z","modified":"2026-10-27T12:30:03.124689973Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.76659Z"},{"id":"RLSA-2026:90492","title":"Important: libreswan security update","description":"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).\n\nSecurity Fix(es):\n\n* libreswan: IKEv2 Use-After-Free bug when using IKE-over-TCP (CVE-2026-94453)\n\n* libreswan: IKEv2 pre-authentication Null Pointer deref in EAP code (CVE-2026-77206)\n\n* libreswan: Null Pointer Dereference in PKCS#7 bundle with no CERTS (CVE-2026-77207)\n\nFor 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.","status":"published","published":"2026-10-29T12:01:16.697685Z","modified":"2026-10-29T12:30:02.479921833Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.76659Z"},{"id":"RLSA-2026:97878","title":"Important: libreswan security update","description":"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).\n\nSecurity Fix(es):\n\n* libreswan: IKEv2 Use-After-Free bug when using IKE-over-TCP (CVE-2026-94453)\n\n* libreswan: IKEv2 pre-authentication Null Pointer deref in EAP code (CVE-2026-77206)\n\n* libreswan: Null Pointer Dereference in PKCS#7 bundle with no CERTS (CVE-2026-77207)\n\nFor 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.","status":"published","published":"2026-11-11T00:04:53.161685Z","modified":"2026-11-11T00:30:02.557018077Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-11T00:46:19.477003Z"},{"id":"ALSA-2026:89748","title":"Important: libreswan security update","description":"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).  \n\nSecurity Fix(es):  \n\n  * libreswan: IKEv2 Use-After-Free bug when using IKE-over-TCP (CVE-2026-94453)\n  * libreswan: IKEv2 pre-authentication Null Pointer deref in EAP code (CVE-2026-77206)\n  * libreswan: Null Pointer Dereference in PKCS#7 bundle with no CERTS (CVE-2026-77207)\n\n\nFor 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.\n","status":"published","published":"2026-10-26T00:00:00Z","modified":"2026-10-29T11:32:32.888538514Z","updated_at":"2026-11-02T15:27:57.367731Z"},{"id":"ALSA-2026:89923","title":"Important: libreswan security update","description":"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).  \n\nSecurity Fix(es):  \n\n  * libreswan: IKEv2 Use-After-Free bug when using IKE-over-TCP (CVE-2026-94453)\n  * libreswan: Denial of Service via sending bogus X.509 certificates (CVE-2026-77205)\n  * libreswan: Null Pointer Dereference in PKCS#7 bundle with no CERTS (CVE-2026-77207)\n\n\nFor 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.\n","status":"published","published":"2026-10-26T00:00:00Z","modified":"2026-10-29T11:31:11.713049033Z","updated_at":"2026-11-02T15:27:57.367731Z"},{"id":"ALSA-2026:90492","title":"Important: libreswan security update","description":"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).  \n\nSecurity Fix(es):  \n\n  * libreswan: IKEv2 Use-After-Free bug when using IKE-over-TCP (CVE-2026-94453)\n  * libreswan: IKEv2 pre-authentication Null Pointer deref in EAP code (CVE-2026-77206)\n  * libreswan: Null Pointer Dereference in PKCS#7 bundle with no CERTS (CVE-2026-77207)\n\n\nFor 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.\n","status":"published","published":"2026-10-26T00:00:00Z","modified":"2026-10-29T11:02:25.439885196Z","updated_at":"2026-11-02T15:27:57.367731Z"},{"id":"AZL-108033","title":"CVE-2026-77207 affecting package libreswan for versions less than 4.15-4","description":"Libreswan has a null pointer dereference bug in the PKCS#7 handling code for IKE certificate authentication. When libreswan decodes an IKE CERT payload of type CERT_PKCS7_WRAPPED_X509, it guards the PKCS#7 blob with SEC_PKCS7ContainsCertsOrCrls() and then iterates the certificate list with SEC_PKCS7GetCertificateList(). The two NSS APIs disagree on a SignedData that carries a CRL but no certificates: ContainsCertsOrCrls() returns PR_TRUE (there is a CRL), so the guard passes, but GetCertificateList() returns NULL (there are no certificates). This causes libreswan to dereference a null pointer leading to a crash and restart. A malicious IKE_AUTH packet can trigger this bug, meaning the peer does not need to be authenticated. No remote code execution is possible. Continued exploitation can cause a denial of service.","status":"published","published":"2026-10-13T22:18:26Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:18.199293Z"},{"id":"CLSA-2026-1792158739","title":"libreswan: Fix of CVE-2026-77207","description":"- CVE-2026-77207: fix a pre-auth NULL pointer dereference in\n  decode_cert_payloads() when a PKCS#7 wrapped CERT payload carries no\n  certificate list (CRL-only or non-SignedData content)","status":"published","published":"2026-10-16T13:52:31Z","modified":"2026-10-26T09:30:58.314215203Z","updated_at":"2026-11-02T15:43:50.949147Z"}]}}