MediaTek MT8390 DA out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in MediaTek MT6781, MT6789, MT6835, MT6855, MT6878, MT6879, MT6886, MT6895, MT6897, MT6983, MT6985, MT6989, MT6990, MT8196, MT8370 and MT8390. This vulnerability affects unknown code of the component DA. Performing a manipulation results in out-of-bounds write. This vulnerability was named CVE-2025-20656. The attack needs to be approached locally. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in MediaTek MT6781, MT6789, MT6835, MT6855, MT6878, MT6879, MT6886, MT6895, MT6897, MT6983, MT6985, MT6989, MT6990, MT8196, MT8370 and MT8390. It has been classified as critical. This affects some unknown processing of the component DA. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In DA, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS09625423; Issue ID: MSV-3033.

It is possible to read the advisory at corp.mediatek.com. This vulnerability is uniquely identified as CVE-2025-20656 since 11/01/2024. The exploitability is told to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

Applying the patch ALPS09625423 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-9974). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: 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: ALPS09625423

Timelineinfo

11/01/2024 🔍
04/07/2025 +156 days 🔍
04/07/2025 +0 days 🔍
10/04/2025 +180 days 🔍

Sourcesinfo

Advisory: MSV-3033
Status: Confirmed

CVE: CVE-2025-20656 (🔍)
GCVE (CVE): GCVE-0-2025-20656
GCVE (VulDB): GCVE-100-303603
EUVD: 🔍

Entryinfo

Created: 04/07/2025 07:50
Updated: 10/04/2025 18:29
Changes: 04/07/2025 07:50 (56), 10/04/2025 18:29 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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