Heap-based buffer overflow in MediaTek products - CVE-2026-20452
Published: June 1, 2026
Vulnerability identifier: #VU133127
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-20452
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: MediaTek
Affected software:
MT6890
MT7615
MT7915
MT7916
MT7981
MT7986
MT7990
MT7992
MT7993
MT6890
MT7615
MT7915
MT7916
MT7981
MT7986
MT7990
MT7992
MT7993
Detailed vulnerability description
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.
How to mitigate CVE-2026-20452
Install security update from vendor's website.