OSPFv3 Process High CPU Utilization in Arista EOS
CVE-2025-8872

7.1HIGH

Key Information:

Vendor

Arista Networks

Status
Eos
Vendor
CVE Published:
16 December 2025

What is CVE-2025-8872?

On systems running Arista EOS with Open Shortest Path First version 3 (OSPFv3) configured, a specially crafted packet can lead to excessive CPU usage in the OSPFv3 process. This may cause the OSPFv3 process to restart, interrupting routes on the switch and potentially impacting network stability. While Arista discovered this issue through internal testing and reports no evidence of exploitation in the wild, it poses a risk to operational efficiency and network reliability.

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Affected Version(s)

EOS 710/710XP Series 4.34.0 <= 4.34.1F

EOS 710/710XP Series 4.33.0 <= 4.33.4M

EOS 710/710XP Series 4.32.0 <= 4.32.7M

References

https://www.arista.com/en/support/advisories-notices/secu...

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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