MediaTek MT7993 WLAN AP Driver authorization

Summaryinfo

A vulnerability, which was classified as very critical, was found in MediaTek MT6890, MT6990, MT7915, MT7916, MT7981, MT7986, MT7990, MT7992 and MT7993. Impacted is an unknown function of the component WLAN AP Driver. The manipulation results in authorization. This vulnerability was named CVE-2025-20674. The attack may be performed from remote. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as very critical has been found in MediaTek MT6890, MT6990, MT7915, MT7916, MT7981, MT7986, MT7990, MT7992 and MT7993. Affected is some unknown functionality of the component WLAN AP Driver. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In wlan AP driver, there is a possible way to inject arbitrary packet due to a missing permission check. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00413202; Issue ID: MSV-3303.

The advisory is shared for download at corp.mediatek.com. This vulnerability is traded as CVE-2025-20674 since 11/01/2024. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/03/2025).

Applying the patch MSV-3303 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-16597). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Chip Software

Vendor

• MediaTek

Name

• MT6890
• MT6990
• MT7915
• MT7916
• MT7981
• MT7986
• MT7990
• MT7992
• MT7993

License

• commercial

CPE 2.3info

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CPE 2.2info

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CVSSv3info

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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