MediaTek MT8910 Video HAL memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.35

Summaryinfo

A vulnerability classified as very critical has been found in MediaTek MT2718, MT6768, MT6769, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6858, MT6877, MT6878, MT6879, MT6881, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT6993, MT8126, MT8171, MT8186, MT8188, MT8189, MT8195, MT8196, MT8367, MT8391, MT8395, MT8668, MT8676, MT8678, MT8695, MT8696, MT8781, MT8788E, MT8792, MT8793, MT8799 and MT8910. Affected is an unknown function of the component Video HAL. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2026-20521. An attack has to be approached locally. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in MediaTek MT2718, MT6768, MT6769, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6858, MT6877, MT6878, MT6879, MT6881, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT6993, MT8126, MT8171, MT8186, MT8188, MT8189, MT8195, MT8196, MT8367, MT8391, MT8395, MT8668, MT8676, MT8678, MT8695, MT8696, MT8781, MT8788E, MT8792, MT8793, MT8799 and MT8910. This issue affects some unknown processing of the component Video HAL. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In Video HAL, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11375674; Issue ID: MSV-9571.

The advisory is shared at mediatek.com. The identification of this vulnerability is CVE-2026-20521 since 11/03/2025. The exploitation is known to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/05/2026).

Applying the patch ALPS11375674 is able to eliminate this problem.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
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: Memory corruption
CWE: CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
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: ALPS11375674

Timelineinfo

11/03/2025 CVE reserved
10/05/2026 +335 days Advisory disclosed
10/05/2026 +0 days VulDB entry created
10/05/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: mediatek.com
Status: Confirmed

CVE: CVE-2026-20521 (🔒)
GCVE (CVE): GCVE-0-2026-20521
GCVE (VulDB): GCVE-100-413489

Entryinfo

Created: 10/05/2026 04:23
Changes: 10/05/2026 04:23 (54)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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