What is GHSA-4xm8-pv92-63mh?

GHSA-4xm8-pv92-63mh is a security advisory published by GitHub Security Advisories with High severity. On affected platforms running Arista EOS with Bidirectional Forwarding Detection (BFD) configured...

Which CVE IDs does GHSA-4xm8-pv92-63mh cover?

GHSA-4xm8-pv92-63mh covers the following CVE IDs: CVE-2026-121368. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-4xm8-pv92-63mh?

GHSA-4xm8-pv92-63mh has a CVSS v3 base score of 8.6, published by GitHub Security Advisories.

GHSA-4xm8-pv92-63mhHighCVSS 8.6

On affected platforms running Arista EOS with Bidirectional Forwarding Detection (BFD) configured...

Vendor

GitHub Security Advisories

Published

November 10, 2026

Last Modified

November 10, 2026

🔗 CVE IDs covered (1)

CVE-2026-121368 →

📋 Description

On affected platforms running Arista EOS with Bidirectional Forwarding Detection (BFD) configured to use keyed MD5 or keyed SHA1 authentication, an unauthenticated attacker with network adjacency (direct or multi-hop) to a BFD-enabled interface can send a specially crafted BFD packet resulting in a system reboot.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-121368
https://www.arista.com/en/support/advisories-notices/security-advisory/25028-security-advisory-0206
https://github.com/advisories/GHSA-4xm8-pv92-63mh