MediaTek MT6899/MT6991/MT8678/MT8793 imgsys improper validation of specified index, position, or offset in input

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in MediaTek MT6899, MT6991, MT8678 and MT8793. Impacted is an unknown function of the component imgsys. This manipulation causes improper validation of specified index, position, or offset in input. This vulnerability is handled as CVE-2026-20413. It is possible to launch the attack on the local host. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as problematic was found in MediaTek MT6899, MT6991, MT8678 and MT8793 (the affected version is unknown). Affected by this vulnerability is an unknown code of the component imgsys. The manipulation with an unknown input leads to a improper validation of specified index, position, or offset in input vulnerability. The CWE definition for the vulnerability is CWE-1285. The product receives input that is expected to specify an index, position, or offset into an indexable resource such as a buffer or file, but it does not validate or incorrectly validates that the specified index/position/offset has the required properties. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In imgsys, 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: ALPS10362725; Issue ID: MSV-5694.

It is possible to read the advisory at corp.mediatek.com. This vulnerability is known as CVE-2026-20413 since 11/03/2025. The exploitation appears to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

Applying the patch ALPS10362725 is able to eliminate this problem.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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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: Improper validation of specified index, position, or offset in input
CWE: CWE-1285
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: ALPS10362725

Timelineinfo

11/03/2025 CVE reserved
02/02/2026 +91 days Advisory disclosed
02/02/2026 +0 days VulDB entry created
02/02/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: MSV-5694
Status: Confirmed

CVE: CVE-2026-20413 (🔒)
GCVE (CVE): GCVE-0-2026-20413
GCVE (VulDB): GCVE-100-343711

Entryinfo

Created: 02/02/2026 10:23
Changes: 02/02/2026 10:23 (55)
Complete: 🔍
Cache ID: 216::103

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