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P4Verified
CVE-2026-77207: libreswan 4.7 through 5.3.2, 5.4 through 5.4
CVE-2026-77207. CVSS 3.1 base score 7.5 (HIGH, Source advisory).
Affected technology
libreswan · 4.7 through 5.3.2, 5.4 through 5.4
The Libreswan Project
Component: Not specified by the source
Function: decode_cert_payloads
Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
The source reports that an attacker could disrupt service under the conditions described by the source. Source advisory’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high.
- CWE
- CWE-252, CWE-476
- CCR priority
- 30.0 /100 (P4)
- CVSS 3.1
- 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Source advisory
- KEV
- no
Provenance
- GitHub Advisory Database · Source record · observed 2026-10-14 06:30:49.831175+00:00 UTC
- NVD CVE API 2.0 · Source record · observed 2026-10-14 05:19:44.455882+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-77207.html