CVE-2026-73455 — HIGH (7.5)

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-130

References

https://www.arista.com/en/support/advisories-notices/security-advisory/24729-sec

FAQ

What is CVE-2026-73455?

CVE-2026-73455 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.

How severe is CVE-2026-73455?

CVE-2026-73455 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-73455?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.