CVE-2026-73460: CWE-863: Incorrect Authorization in Arista Networks EOS
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.
CVE-2026-73460: CWE-863: Incorrect Authorization in Arista Networks EOS
Description
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 v3.1
Score 6.1medium
Affected software
Arista Networks
EOS
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Arista
- Date Reserved
- 2026-08-12T16:45:03.511Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aaa070955bf5e2cf5e85e30
Added to database: 09/16/2026, 03:03:37 UTC
Last updated: 09/16/2026, 03:03:37 UTC
Views: 1
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