CVE-2026-7473 · netVigilance record NV26-0133
Arista Extensible Operating System Incomplete Comparison with Missing Factors
past due
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA deadline 2026-06-23 · passed 2 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
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.
Who is affected
Arista Extensible Operating System. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-1023.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 2 months ago
Sources
- NVD entry for CVE-2026-7473 nvd.nist.gov/vuln/detail/CVE-2026-7473
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- arista.com www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2026-7473