MediaTek MT7986 WLAN AP Driver stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in MediaTek MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981 and MT7986. This affects an unknown function of the component WLAN AP Driver. Performing a manipulation results in stack-based overflow. This vulnerability was named CVE-2025-20736. The attack needs to be approached locally. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in MediaTek MT6890, MT7615, MT7622, MT7663, MT7915, MT7916, MT7981 and MT7986. It has been classified as critical. This affects some unknown functionality of the component WLAN AP Driver. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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 if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: WCNCR00435347; Issue ID: MSV-4049.

The advisory is shared at corp.mediatek.com. This vulnerability is uniquely identified as CVE-2025-20736 since 11/01/2024. The exploitability is told to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available.

Applying a patch is able to eliminate this problem.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/01/2024 CVE reserved
11/04/2025 +368 days Advisory disclosed
11/04/2025 +0 days VulDB entry created
11/04/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: corp.mediatek.com
Status: Confirmed

CVE: CVE-2025-20736 (🔒)
GCVE (CVE): GCVE-0-2025-20736
GCVE (VulDB): GCVE-100-331053

Entryinfo

Created: 11/04/2025 07:54
Changes: 11/04/2025 07:54 (54)
Complete: 🔍
Cache ID: 216::103

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