CVE-2026-20408

In wlan, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00461651; Issue ID: MSV-4758.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://corp.mediatek.com/product-security-bulletin/February-2026	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:mediatek:software_development_kit::::::::
	cpe:2.3:o:openwrt:openwrt:19.07.0:-::::::
	cpe:2.3:o:openwrt:openwrt:21.02.0:-::::::
	cpe:2.3:o:openwrt:openwrt:23.05.0:-::::::

OR	cpe:2.3:h:mediatek:mt6890:-:::::::*
	cpe:2.3:h:mediatek:mt7615:-:::::::*
	cpe:2.3:h:mediatek:mt7915:-:::::::*
	cpe:2.3:h:mediatek:mt7916:-:::::::*
	cpe:2.3:h:mediatek:mt7981:-:::::::*
	cpe:2.3:h:mediatek:mt7986:-:::::::*

History

No history.

Information

Published : 2026-02-02 09:15

Updated : 2026-06-17 10:17

NVD link : CVE-2026-20408

Mitre link : CVE-2026-20408

CVE.ORG link : CVE-2026-20408

JSON object : View

Products Affected

mediatek

software_development_kit
mt7981
mt7615
mt7986
mt7915
mt6890
mt7916

openwrt

openwrt

CWE

CWE-122

Heap-based Buffer Overflow

CWE-787

Out-of-bounds Write

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