CVE-2026-7473

Arista Networks EOSActively Exploited (CISA KEV)CVSS 6.9KEV0-Day

Actively exploited (CISA KEV) - patch before 2026-06-23

Arista Extensible Operating System (EOS) contains an incomplete comparison with missing factors vulnerability when the switch incorrectly decapsulate and forwards other unexpected tunneled packet with a destination IP matching its configured decapsulation IP.

Actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. No distribution fix is listed yet; apply vendor mitigations and monitor.

Recommended action: No fix is published yet for an actively-exploited flaw. Apply vendor mitigations, restrict exposure, and watch for a patch.

CVE-2026-7473 Arista Networks EOS Actively Exploited (CISA KEV)

Severity metrics

CVSS 4.0 : 6.9 MEDIUM · CVSS 3.1 : 5.8 MEDIUM

Attack vectorNetwork (remote)

Attack complexityLow

Attack requirementsNone

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactLow

Availability impactNone

Subsequent confidentialityNone

Subsequent integrityLow

Subsequent availabilityNone

Vector: AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

Affected & fixed versions by distribution

Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.

No affected package in the tracked watchlist yet (Debian, Ubuntu, Arch, SUSE, Red Hat...). Triage may still be pending.

Sources

Advisory NVD CVE.org

Published 2026-06-09 · updated 2026-07-04 · source: CISA Known Exploited Vulnerabilities