All vulnerabilities
CVE-2026-7473

Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability

Arista Extensible Operating System
Open in ThreatlineRecord JSON
CVSS
5.8Medium
ExploitationExploited in the wildAdded to KEV 9 Jun 2026CISA KEV
Exploit odds (EPSS)0.65%Chance of exploitation activity in the next 30 days, higher than 50% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline23 Jun 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 5 Jun 2026, 16:22 UTCPublishedCVE List
  2. 9 Jun 2026Added to CISA KEVCISA KEV

Description

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.

Text from CVE List

Affected versions 7

  • EOSaffected: 4.36.0CVE List
  • EOSaffected: 4.35.0 through 4.35CVE List
  • EOSaffected: 4.34.0 through 4.34CVE List
  • EOSaffected: 4.33.0 through 4.33CVE List
  • EOSaffected: 4.32.0 through 4.32CVE List
  • EOSaffected: 4.31.0 through 4.31CVE List
  • EOSaffected: * through 4.30CVE List

References 4