CVE-2025-2796

MediumCVSS 5.3/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected software

Vendor	Product	Versions
Arista Networks	EOS	>= 4.33.0, <= 4.33.2F

References

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

Timeline

Published: May 27, 2025
Last modified: Jun 17, 2026
NVD status: Deferred

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