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CVE-2026-75945: CWE-459 Incomplete Cleanup in Arista Networks EOS

0
Low
VulnerabilityCVE-2026-75945cvecve-2026-75945cwe-459
Published: 09/14/2026 (09/14/2026, 22:23:02 UTC)
Source: CVE Database V5
Vendor/Project: Arista Networks
Product: EOS

Description

CVE-2026-75945 is a low-severity vulnerability in Arista Networks EOS where a race condition can cause a supplicant to remain authorized after issuing the 'clear dot1x host all' command. This incomplete cleanup issue may allow continued access despite the command intended to clear authorization states.

CVSS v3.1

Score 2.6low

Attack Vector
Adjacent Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected software

Arista Networks

EOS

Affected versions
>=4.36.0 <=4.36.1F
arista/eos
pkg:rpm/arista/eos
Affected versions
>=4.36.0 <=4.36.1F

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/14/2026, 23:46:26 UTC

Technical Analysis

This vulnerability involves a race condition in Arista Networks EOS versions 4.36.0 through 4.36.1F. When the 'clear dot1x host all' command is executed, a supplicant may remain in an authorized state due to incomplete cleanup of authorization information. The CVSS 3.1 base score is 2.6, indicating low severity, with low impact on integrity and no impact on confidentiality or availability. The attack vector is adjacent network, requiring high attack complexity and low privileges, with no user interaction needed.

Potential Impact

The impact is limited to a potential integrity issue where a supplicant remains authorized after a command intended to clear authorization states. There is no impact on confidentiality or availability. This could allow continued network access by a device that should have been deauthorized, but exploitation requires specific conditions and is of low severity.

Mitigation Recommendations

No vendor advisory or patch information is provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, administrators should be aware of the potential for incomplete cleanup when using the 'clear dot1x host all' command and consider operational controls accordingly.

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Technical Details

Data Version
5.2
Assigner Short Name
Arista
Date Reserved
2026-08-18T16:04:12.507Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6aa883f355bf5e2cf5cca438

Added to database: 09/14/2026, 23:32:03 UTC

Last enriched: 09/14/2026, 23:46:26 UTC

Last updated: 09/15/2026, 00:21:31 UTC

Views: 5

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