CVE-2025-8873
HIGHArista EOS Dataplane Denial of Service via Malformed IPsec Packet
Title source: cnaDescription
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.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
https://www.arista.com/en/support/advisories-notices/security-advisory/22869-security-advisory-0127
Scores
CVSS v3
7.5
EPSS
0.0039
EPSS Percentile
30.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1286
Status
published
Products (5)
Arista Networks/EOS
4.29.0M - 4.29.10.1M
Arista Networks/EOS
4.30.0M - 4.30.10M
Arista Networks/EOS
4.31.0M - 4.31.7.1M
Arista Networks/EOS
4.32.0M - 4.32.6.1M
Arista Networks/EOS
4.33.0M - 4.33.4M
Published
Jun 04, 2026
Tracked Since
Jun 05, 2026