SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-20456

In wlan STA driver, there is a possible system crash due to a missing bounds check.

MEDIUM 5.5EPSS 0.10%

Does this matter?

Lower severity and a low EPSS score (0.10%). Track it; it rarely justifies an emergency change on its own.

Description

In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.

CVSS 3.1
5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
0.10% probability · 1th percentile
CISA KEV
Not listed
Weakness
CWE-787
Affected
mediatek/mt7902 firmware · mediatek/mt7920 firmware · mediatek/mt7921 firmware · mediatek/mt7922 firmware · mediatek/mt7925 firmware · mediatek/mt7927 firmware
Source
security@mediatek.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.