What is CVE-2026-120975?

CVE-2026-120975 is a low-severity vulnerability in Arista Networks Eos, classified under CWE-197. CVSS score: 3.1/10. Published 2026-11-10.

How severe is CVE-2026-120975?

Low severity. CVSS v3 base score is 3.1 out of 10.

Vulnerability in Arista Networks Eos

CVE-2026-120975

On affected platforms running Arista EOS with automatic certificate management configured and automatic Certificate Authority (CA) certificate retrieval enabled, a malicious packet may cause the AutoCertMgmt process to be terminated unexpectedly. Managed X.509 certificates will not be renewed automatically and may eventually expire, potentially disrupting TLS-dependent services.

Published 2026-11-10.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Arista Networks Eos

Weakness classification (CWE)

CWE-197

References

www.arista.com/en/support/advisories-notices/security-advisory/25027-security-a… (vendor-advisory)

Frequently asked questions

What is CVE-2026-120975?: CVE-2026-120975 is a low-severity vulnerability in Arista Networks Eos, classified under CWE-197. CVSS score: 3.1/10. Published 2026-11-10.
How severe is CVE-2026-120975?: Low severity. CVSS v3 base score is 3.1 out of 10.