Main Vulnerability Database Vulnerabilities #VU133127

Heap-based buffer overflow in MediaTek products - CVE-2026-20452

Published: June 1, 2026

Vulnerability identifier: #VU133127

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-20452

CWE-ID: CWE-122

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause memory corruption.

The vulnerability exists due to heap-based buffer overflow in wlan when processing input. A local user can trigger the vulnerable condition to cause memory corruption.

Affected software

MT6890
MT7615
MT7915
MT7916
MT7981
MT7986
MT7990
MT7992
MT7993

How to mitigate CVE-2026-20452

Install security update from vendor's website.

External References

Related Security Bulletins