What’s Vulnerable › Vulnerabilities
CVE-2026-73455: Security Advisory 0173
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% 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-130
Description
On affected platforms running Arista EOS with Open Shortest Path First version 3 (OSPFv3) configured, a specially crafted packet can cause the OSPFv3 agent to restart unexpectedly.
Affected products
- Arista Networks EOS: from 1.0.0 before 4.33.0F; from 4.33.0F through 4.33.8M; from 4.34.0F through 4.34.6M; from 4.35.0F through 4.35.4M; from 4.36.0F through 4.36.0.1F — 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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