CVE-2026-73436
MEDIUMCVSS 6.5/10EPSS 0.23%
Last modified
CVE-2026-73436 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Arista Networks | EOS | >= 4.36.0F, <= 4.36.1F; >= 4.35.0F, <= 4.35.5M; >= 4.34.0F, <= 4.34.7.1M; >= 4.33.0F, <= 4.33.9M; >= 1.0.0, < 4.33.0F |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-73436?
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.
How severe is CVE-2026-73436?
CVE-2026-73436 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.
How do I fix CVE-2026-73436?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2026-73436?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST