LOW 3.7 NVD
CVE-2026-77205
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 cert
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.
References
- 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
This low severity vulnerability with a CVSS score of 3.7 was published on 2026-10-13 via NVD.
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