MediaTek MT7902/MT7920/MT7921/MT7922/MT7925/MT7927 Bluetooth Driver out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in MediaTek MT7902, MT7920, MT7921, MT7922, MT7925 and MT7927. It has been declared as problematic. Affected by this issue is some unknown functionality of the component Bluetooth Driver. Such manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2025-20687. Local access is required to approach this attack. No exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in MediaTek MT7902, MT7920, MT7921, MT7922, MT7925 and MT7927. Affected by this issue is some unknown processing of the component Bluetooth Driver. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability. CVE summarizes:

In Bluetooth driver, there is a possible out of bounds read due to an incorrect bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00418045; Issue ID: MSV-3481.

The advisory is shared for download at corp.mediatek.com. This vulnerability is handled as CVE-2025-20687 since 11/01/2024. The exploitation is known to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available.

Applying the patch MSV-3481 is able to eliminate this problem.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
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
CWE: CWE-125 / 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-3481

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-3481
Status: Confirmed

CVE: CVE-2025-20687 (🔒)
GCVE (CVE): GCVE-0-2025-20687
GCVE (VulDB): GCVE-100-315272

Entryinfo

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

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