CVE-2026-75943 (CVSS 2.6)

Description

A brief (milliseconds to seconds) traffic leak may occur when an authenticated supplicant is removed, either via the clear dot1x host all CLI command or due to a supplicant timeout. During this window, the supplicant's traffic may pass without ACL enforcement.

Is your site exposed to CVE-2026-75943?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

2.6

LOW

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

EPSS — Exploit Prediction

0.0020

Probability of exploitation

0.10%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-459 CWE-459

References

Other References

https://www.arista.com/en/support/advisories-notices/security-advisory/24706-security-advisory-0150

Frequently Asked Questions

What is CVE-2026-75943? +

A brief (milliseconds to seconds) traffic leak may occur when an authenticated supplicant is removed, either via the clear dot1x host all CLI command or due to a supplicant timeout. During this window, the supplicant's traffic may pass without ACL enforcement. It has a CVSS v3.1 base score of 2.6 (LOW).

How severe is CVE-2026-75943? +

CVE-2026-75943 has a CVSS v3.1 score of 2.6 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0020, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-75943? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-0427

Improper cleanup of shared register resources in GPU firmware could allow an admin-privileged attacker from a Guest Virtual machine (VM) …

CVE-2026-77761

A parser state isolation vulnerability in misp-stix could cause data from a previously processed STIX document to be retained and …

CVE-2026-112180

MISP contains a data integrity flaw in its event deletion logic. When a user deletes an event, several associated records …

CVE-2026-93446

Incomplete cleanup vulnerability in Apache Tomcat could cause TLS 1.3 connections to fail intermittently. This issue affects Apache Tomcat: from …

CVE-2026-116132

HTTP::Body versions before 1.23_01 for Perl leave the temporary file of an incomplete multipart upload on disk. The multipart parser …

CVE-2026-106366

Incomplete cleanup in CustomTabs in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker to bypass web …

CVE-2026-75943