CVE-2025-8872

A specially crafted packet can cause the OSFPv3 process to have high CPU utilization which may result in the OSFPv3 process being restarted

State: Published
Severity: 7.1 High
Published: Dec 16, 2025
Updated: Dec 16, 2025
Reserved: Aug 11, 2025

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Description

On affected platforms running Arista EOS with OSPFv3 configured, a specially crafted packet can cause the OSFPv3 process to have high CPU utilization which may result in the OSFPv3 process being restarted. This may cause disruption in the OSFPv3 routes on the switch.

This issue was discovered internally by Arista and is not aware of any malicious uses of this issue in customer networks.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	Arista
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	Arista

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
EOSArista Networks	4.34.0 through 4.34.1FAffected 4.33.0 through 4.33.4MAffected 4.32.0 through 4.32.7MAffected 4.31.0 through 4.31.8MAffected 4.31.0 and earlierAffected

References

https://www.arista.com/en/support/advisories-notices/security-advisory/23115-security-advisory-0128

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