CVE-2025-2796

Summary

On affected platforms with hardware IPSec support running Arista EOS with IPsec enabled and anti-replay protection configured, EOS may exhibit unexpected behavior in specific cases. Received duplicate encrypted packets, which should be dropped under normal anti-replay protection, will instead be forwarded due to this vulnerability.

Note: this issue does not affect VXLANSec or MACSec encryption functionality.

Affected Software

Weaknesses

• cwe-284

Workarounds

There is no known mitigation for CVE-2025-2796. The recommended resolution is to upgrade to a remediated software version at your earliest convenience.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://www.arista.com/en/support/advisories-notices/security-advisory/21413-security-advisory-0119

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