highclosedpatched

Arista Extensible Operating System: Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability

› Arista Extensible Operating System

last updated Jun 9, 2026

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started: Jun 9, 2026
closed: Jun 9, 2026
CVEs: 1
sources: 3

## summary

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. Added to CISA KEV on 2026-06-09.

severity: Actively exploited (CISA KEV)

## cve ids[1]

CVE-2026-7473

## affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

## fixed in

See vendor advisory linked in sources

## timeline[1]

Jun 9, 2026
CISA added CVE-2026-7473 to the KEV catalog (due 2026-06-23).

## advisories[3]

## notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier).

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