CVE-2026-77205

Description

Libreswan in FIPS mode has a vulnerability where badly formed received certificates are rejected, but not deleted from the NSS cache. As a result, any real certificates with the same serial number are rejected as well. This can be abused to lock out legitimate peers from connecting. The add_decoded_cert() function missed a call to CERT_DestroyCertificate() due to an incorrect fix for CVE-2026-14957. Sending bogus certificates with new serial numbers could prevent the real certificates with those serial numbers from connecting until the service has restarted.

Traduire en français

Produits concernés

• The Libreswan Project libreswan

Scores CVSS

Faiblesses (CWE)

• CWE-772

Références

• https://libreswan.org/security/CVE-2026-14957/CVE-2026-14957.txt
• https://libreswan.org/security/CVE-2026-77205/
• https://libreswan.org/security/CVE-2026-77205/CVE-2026-77205.txt

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories