Is CVE-2026-20423 actively exploited?

No active exploitation of CVE-2026-20423 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-20423 be exploited remotely?

No. CVE-2026-20423 requires local access to exploit.

What is the CVSS score of CVE-2026-20423?

CVE-2026-20423 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2026-20423

CWE-749Published: March 2, 2026· Updated: Mar 3, 2026

7.8

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.2th

Official Description

In wlan STA driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00465314; Issue ID: MSV-4956.

NVD Source

Technical Analysis

CVE-2026-20423 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.