MediaTek MT6890/MT7915/MT7916/MT7981/MT7986 WLAN AP FW out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in MediaTek MT6890, MT7915, MT7916, MT7981 and MT7986. It has been classified as critical. This affects an unknown part of the component WLAN AP FW. This manipulation causes out-of-bounds write. This vulnerability is registered as CVE-2025-20646. Remote exploitation of the attack is possible. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical was found in MediaTek MT6890, MT7915, MT7916, MT7981 and MT7986. Affected by this vulnerability is an unknown code block of the component WLAN AP FW. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In wlan AP FW, there is a possible out of bounds write due to improper input validation. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00389074; Issue ID: MSV-1803.

It is possible to read the advisory at corp.mediatek.com. This vulnerability is known as CVE-2025-20646 since 11/01/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

Applying the patch MSV-1803 is able to eliminate this problem.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: 🔍

Patch: MSV-1803

Timelineinfo

11/01/2024 🔍
03/03/2025 +122 days 🔍
03/03/2025 +0 days 🔍
03/03/2025 +0 days 🔍

Sourcesinfo

Advisory: MSV-1803
Status: Confirmed

CVE: CVE-2025-20646 (🔍)
GCVE (CVE): GCVE-0-2025-20646
GCVE (VulDB): GCVE-100-298135

Entryinfo

Created: 03/03/2025 07:55
Updated: 03/03/2025 12:30
Changes: 03/03/2025 07:55 (56), 03/03/2025 12:30 (1)
Complete: 🔍
Cache ID: 216::103

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