Resource exhaustion in Arista Networks Eos
CVE-2025-8872
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.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.003 (18.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Arista Networks Eos — versions 4.34.0, 4.33.0, 4.32.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-8872?
- CVE-2025-8872 is a medium-severity vulnerability in Arista Networks Eos, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2025-12-16.
- How severe is CVE-2025-8872?
- Medium severity. CVSS v3 base score is 6.5 out of 10.