CVSS 4.0
7.0 highCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:HCVE-2026-73438
High (7.0). EPSS 0.2% chance of exploitation in the next 30 days.
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.
Severity
CVSS 3.1
5.3 mediumCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 15% of CVEs (scores of 2026-10-31)
- CWE
- CWE-617
- Published
- Modified
- Record from
- the NVD, synced