CVE-2025-8873 — Arista EOS Dataplane Denial of Service via Malformed IPsec Packet

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Arista Networks / EOS	affected 4.33.0M through 4.33.4M; affected 4.32.0M through 4.32.6.1M; affected 4.31.0M through 4.31.7.1M; affected 4.30.0M through 4.30.10M; affected 4.29.0M through 4.29.10.1M

CWE

CWE-1286

References

https://www.arista.com/en/support/advisories-notices/security-advisory/22869-security-advisory-0127

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.