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CVE-2026-73460

Security Advisory 0160

MEDIUM
6.1
CVSS Score
Published: September 15, 2026 at 11:20 PM UTC
Updated: September 16, 2026 at 08:17 PM UTC
1 product affected across 1 vendorArista EOS

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Arista EOS· Arista Networks
60%
4.36.0 ≤ v ≤ 4.36.1F4.36.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://www.arista.com/en/support/advisories-notices/security-advisory/24716-security-advisory-0160

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMArista
Attack Vector
ADJACENT_NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-863

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