What’s Vulnerable › Vulnerabilities
CVE-2026-73436: Security Advisory 0171
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-16 · updated 2026-09-16
- Weakness: CWE-125
Description
On affected platforms running Arista EOS with OSPFv2 and OSPFv2 segment routing configured, a specially crafted OSPFv2 packet from an adjacent OSPF neighbor may cause OSPF to restart unexpectedly.
Affected products
- Arista Networks EOS: from 4.36.0F through 4.36.1F; from 4.35.0F through 4.35.5M; from 4.34.0F through 4.34.7.1M; from 4.33.0F through 4.33.9M; from 1.0.0 before 4.33.0F — fixed in 4.33.0F
How to fix
Upgrade to a fixed version: Arista Networks EOS 4.33.0F. Check the vendor advisory for mitigations.
References
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