CVE-2026-20452

HIGH CVSS 3.1: 8.0 EPSS 0.43%
Updated Jul 22, 2026
Mediatek
Parameter Value
CVSS 8.0 (HIGH)
Type CWE-122 (Heap-based Buffer Overflow)
Vendor Mediatek
Public PoC No

In wlan AP driver, there is a possible memory corruption due to a heap buffer overflow. This could lead to remote (proximal/adjacent) code execution with User execution privileges needed. User interaction is not needed for exploitation.

Patch ID: WCNCR00480138; Issue ID: MSV-6295.

Attack Parameters

Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 18

Configuration From (including) Up to (excluding)
Mediatek Mt6890_Firmware
cpe:2.3:o:mediatek:mt6890_firmware:-:*:*:*:*:*:*:*
Mediatek Mt6890
cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*
Mediatek Mt7615_Firmware
cpe:2.3:o:mediatek:mt7615_firmware:-:*:*:*:*:*:*:*
Mediatek Mt7615
cpe:2.3:h:mediatek:mt7615:-:*:*:*:*:*:*:*
Mediatek Mt7915_Firmware
cpe:2.3:o:mediatek:mt7915_firmware:-:*:*:*:*:*:*:*
Mediatek Mt7915
cpe:2.3:h:mediatek:mt7915:-:*:*:*:*:*:*:*
Mediatek Mt7916_Firmware
cpe:2.3:o:mediatek:mt7916_firmware:-:*:*:*:*:*:*:*
Mediatek Mt7916
cpe:2.3:h:mediatek:mt7916:-:*:*:*:*:*:*:*
Mediatek Mt7981_Firmware
cpe:2.3:o:mediatek:mt7981_firmware:-:*:*:*:*:*:*:*
Mediatek Mt7981
cpe:2.3:h:mediatek:mt7981:-:*:*:*:*:*:*:*
Mediatek Mt7986_Firmware
cpe:2.3:o:mediatek:mt7986_firmware:-:*:*:*:*:*:*:*
Mediatek Mt7986
cpe:2.3:h:mediatek:mt7986:-:*:*:*:*:*:*:*
Mediatek Mt7990_Firmware
cpe:2.3:o:mediatek:mt7990_firmware:-:*:*:*:*:*:*:*
Mediatek Mt7990
cpe:2.3:h:mediatek:mt7990:-:*:*:*:*:*:*:*
Mediatek Mt7992_Firmware
cpe:2.3:o:mediatek:mt7992_firmware:-:*:*:*:*:*:*:*
Mediatek Mt7992
cpe:2.3:h:mediatek:mt7992:-:*:*:*:*:*:*:*
Mediatek Mt7993_Firmware
cpe:2.3:o:mediatek:mt7993_firmware:-:*:*:*:*:*:*:*
Mediatek Mt7993
cpe:2.3:h:mediatek:mt7993:-:*:*:*:*:*:*:*