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High severity · published Nov 4, 2025
CVE-2025-20735
In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check
7.8
CVSS
0.1%
EPSS
No
On KEV
Description
In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00435349; Issue ID: MSV-4051.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MM
MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986 · MediaTek, Inc.
SDK release 7.6.7.2 and before / openWRT 19.07, 21.02 · source: vendor
OP
Openwrt · Openwrt
19.07.0; 21.02.0 · source: NVD
SD
Software Development Kit · Mediatek
through 7.6.7.2 · source: NVD
Affected product
MM
MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986
MediaTek, Inc.
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-20735
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-20735
Vendor Advisory
https://corp.mediatek.com/product-security-bulletin/November-2025
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