Sceawere

Vulnerability Detail

CVE-2026-73438 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Severity
Medium
Score / CVSS
5.3
Creation Date
1d ago
Vendor
Arista Networks
Product
EOS
Attack Type
CWE-617 Reachable Assertion
Vector String
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Complexity
HIGH

Narrative and Response

Description

On affected platforms running Arista EOS with Open Shortest Path First version 3 (OSPFv3) configured, an unauthenticated attacker on the same OSPFv3 broadcast domain can send a specially crafted set of packets that can cause the Ospf3 agent to restart unexpectedly. The crash results in the loss of all OSPFv3 adjacencies on the affected device and may disrupt routing across the broader OSPF domain until the agent recovers. This issue was reported externally by Dravanet Inc., and Arista is not aware of any malicious exploitation of this vulnerability in customer networks.

Executive Summary

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Technical Details

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Mitigations

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References

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Additional Metadata

{
  "score": "5.3",
  "pubDate": "2026-09-16T10:16:51.690Z",
  "pubdate": "2026-09-16T10:16:51.690Z"
}