CVE-2026-73460

On affected platforms running Arista EOS with IS-IS graceful restart enabled, an unauthenticated attacker who can inject a malformed IS-IS LSP PDU packet can cause the IS-IS graceful restart procedure to terminate prematurely. This may result in traffic loss following a restart event.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.0

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://www.arista.com/en/support/advisories-notices/security-advisory/24716-security-advisory-0160

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-16 00:17

Updated : 2026-09-16 00:17

NVD link : CVE-2026-73460

Mitre link : CVE-2026-73460

CVE.ORG link : CVE-2026-73460

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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