CVE-2025-2796 – Arista EOS IPsec Anti-Replay Protection Vulnerability

The following table lists the changes that have been made to the
CVE-2025-2796 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    May. 27, 2025

    Action Type Old Value New Value
    Added Description 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.

    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
    Added Reference https://www.arista.com/en/support/advisories-notices/security-advisory/21413-security-advisory-0119
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