CVE-2026-120974
Security Advisory 0219
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
On affected platforms running Arista EOS with IPsec AutoVPN Feature configured with dynamic paths, the configured IPsec replay window may not be applied as expected. As a result, IPsec anti-replay protection may be silently inactive even when it has been configured via an SA policy, contrary to the operator's expectation. This issue does not allow decryption of the affected IPsec traffic, but it may allow replay of previously valid protected traffic.
| CWE | CWE-294 |
| Vendor | arista networks |
| Product | eos |
| Published | Nov 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Arista Networks / EOS
4.27.0F < 4.28.0F 4.28.0F ≤ 4.28.13M 4.29.0F < 4.30.0F 4.30.0F < 4.31.0F 4.31.0F < 4.32.0F 4.32.0F < 4.33.0F 4.33.0F ≤ 4.33.8M 4.34.0F ≤ 4.34.7M 4.35.0F ≤ 4.35.5M 4.36.0F ≤ 4.36.1F