CVE-2026-7473 — Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability
CVE-2026-7473: Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Arista |
| Product | Extensible Operating System |
| Date added | 2026-06-09 |
| Due date | 2026-06-23 |
| Ransomware campaign use | Unknown |
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.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137 ; https://nvd.nist.gov/vuln/detail/CVE-2026-7473
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7473
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog