MediaTek MT7902/MT7920/MT7921/MT7922/MT7925/MT7927 Bluetooth Driver heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in MediaTek MT7902, MT7920, MT7921, MT7922, MT7925 and MT7927 and classified as critical. This impacts an unknown function of the component Bluetooth Driver. The manipulation leads to heap-based overflow. This vulnerability is traded as CVE-2025-20680. An attack has to be approached locally. There is no exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in MediaTek MT7902, MT7920, MT7921, MT7922, MT7925 and MT7927. It has been rated as critical. This issue affects an unknown part of the component Bluetooth Driver. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In Bluetooth 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: WCNCR00418044; Issue ID: MSV-3482.

The advisory is shared at corp.mediatek.com. The identification of this vulnerability is CVE-2025-20680 since 11/01/2024. The exploitation is known to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available.

Applying the patch MSV-3482 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-20372). 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

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / 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: 🔒

Patch: MSV-3482

Timelineinfo

11/01/2024 CVE reserved
07/08/2025 +248 days Advisory disclosed
07/08/2025 +0 days VulDB entry created
07/14/2025 +6 days VulDB entry last update

Sourcesinfo

Advisory: MSV-3482
Status: Confirmed

CVE: CVE-2025-20680 (🔒)
GCVE (CVE): GCVE-0-2025-20680
GCVE (VulDB): GCVE-100-315269
EUVD: 🔒

Entryinfo

Created: 07/08/2025 07:31
Updated: 07/14/2025 17:45
Changes: 07/08/2025 07:31 (56), 07/11/2025 07:54 (1), 07/14/2025 17:45 (1)
Complete: 🔍
Cache ID: 216::103

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

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