MediaTek MT8796 KeyInstall out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in MediaTek MT6765, MT6768, MT6833, MT6835, MT6853, MT6855, MT6879, MT6886, MT6893, MT6897, MT6983, MT6985, MT6989 and MT8796. The affected element is an unknown function of the component KeyInstall. The manipulation leads to out-of-bounds write. This vulnerability is traded as CVE-2025-20645. An attack has to be approached locally. There is no exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in MediaTek MT6765, MT6768, MT6833, MT6835, MT6853, MT6855, MT6879, MT6886, MT6893, MT6897, MT6983, MT6985, MT6989 and MT8796 and classified as critical. This issue affects some unknown functionality of the component KeyInstall. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In KeyInstall, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS09475476; Issue ID: MSV-2599.

It is possible to read the advisory at corp.mediatek.com. The identification of this vulnerability is CVE-2025-20645 since 11/01/2024. The exploitation is known to be easy. Attacking locally is a requirement. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not publicly available.

Applying the patch ALPS09475476 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-0477). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Google Android

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
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: 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: ALPS09475476

Timelineinfo

11/01/2024 🔍
03/03/2025 +122 days 🔍
03/03/2025 +0 days 🔍
09/06/2025 +187 days 🔍

Sourcesinfo

Advisory: MSV-2599
Status: Confirmed

CVE: CVE-2025-20645 (🔍)
GCVE (CVE): GCVE-0-2025-20645
GCVE (VulDB): GCVE-100-298139
CERT Bund: WID-SEC-2025-0477 - Android Patchday März 2025: Mehrere Schwachstellen

Entryinfo

Created: 03/03/2025 08:03
Updated: 09/06/2025 12:14
Changes: 03/03/2025 08:03 (56), 03/03/2025 12:30 (1), 09/06/2025 12:14 (7)
Complete: 🔍
Cache ID: 216::103

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

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