IPSec Vulnerability in Arista EOS with Anti-Replay Protection
CVE-2025-2796

5.3MEDIUM

Key Information:

Vendor

Arista Networks

Status
Eos
Vendor
CVE Published:
27 May 2025

What is CVE-2025-2796?

A vulnerability in Arista's EOS occurs when hardware IPSec support is enabled, coupled with anti-replay protection. In specific scenarios, the system fails to drop duplicate encrypted packets, contrary to expected behavior. This flaw allows such packets to be inadvertently forwarded, posing potential security risks. Importantly, this issue does not impact VXLANSec or MACSec encryption functionalities.

Affected Version(s)

EOS EOS 4.33.0 <= 4.33.2F

References

https://www.arista.com/en/support/advisories-notices/secu...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-2796 : IPSec Vulnerability in Arista EOS with Anti-Replay Protection