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Description

On affected platforms running Arista EOS with IPsec configured, a specially crafted packet can cause the dataplane to stop processing all IPsec traffic. The control plane may detect this condition, and attempt to reset the IPsec processing pipeline. After reset traffic may not resume being processed. There is no impact to non-IPsec traffic or to IPsec traffic not originating or terminating on the system. This issue was reported by an Arista customer.

PUBLISHED Reserved 2025-08-11 | Published 2026-06-04 | Updated 2026-06-05 | Assigner Arista




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-1286: Improper Validation of Syntactic Correctness of Input

Product status

Default status
unaffected

4.33.0M (custom)
affected

4.32.0M (custom)
affected

4.31.0M (custom)
affected

4.30.0M (custom)
affected

4.29.0M (custom)
affected

References

www.arista.com/...rity-advisory/22869-security-advisory-0127 vendor-advisory

cve.org (CVE-2025-8873)

nvd.nist.gov (CVE-2025-8873)

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