MediaTek MT8910 Display out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.8$0-$5k1.35

Summaryinfo

A vulnerability categorized as very critical has been discovered in MediaTek MT6991, MT6993, MT8188, MT8189, MT8668, MT8676, MT8678, MT8781, MT8799 and MT8910. Impacted is an unknown function of the component Display. Executing a manipulation can lead to out-of-bounds write. This vulnerability is handled as CVE-2026-20477. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability has been found in MediaTek MT6991, MT6993, MT8188, MT8189, MT8668, MT8676, MT8678, MT8781, MT8799 and MT8910 and classified as very critical. This vulnerability affects an unknown functionality of the component Display. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In display, 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: ALPS11009963; Issue ID: MSV-7658.

The advisory is shared for download at mediatek.com. This vulnerability was named CVE-2026-20477 since 11/03/2025. The exploitation appears to be easy. The attack needs to be approached locally. The exploitation needs additional levels of successful authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/03/2026).

Applying the patch ALPS11009963 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: 8.2
VulDB Meta Temp Score: 7.8

VulDB Base Score: 8.2
VulDB Temp Score: 7.8
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
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: ALPS11009963

Timelineinfo

11/03/2025 CVE reserved
08/03/2026 +272 days Advisory disclosed
08/03/2026 +0 days VulDB entry created
08/03/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: mediatek.com
Status: Confirmed

CVE: CVE-2026-20477 (🔒)
GCVE (CVE): GCVE-0-2026-20477
GCVE (VulDB): GCVE-100-385456

Entryinfo

Created: 08/03/2026 05:08
Changes: 08/03/2026 05:08 (54)
Complete: 🔍
Cache ID: 216::103

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

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