MediaTek MT6991/MT6993/MT8196/MT8678/MT8793 Display out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in MediaTek MT6991, MT6993, MT8196, MT8678 and MT8793. This affects an unknown part of the component Display. The manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2026-20424. Local access is required to approach this attack. No exploit exists. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in MediaTek MT6991, MT6993, MT8196, MT8678 and MT8793. It has been rated as problematic. This issue affects an unknown code of the component Display. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. The summary by CVE is:

In display, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10320471; Issue ID: MSV-5540.

The advisory is shared at corp.mediatek.com. The identification of this vulnerability is CVE-2026-20424 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.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202603-237). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.8

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 4.4
ADP CISA Vector: 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: 🔒

Timelineinfo

11/03/2025 CVE reserved
03/02/2026 +119 days Advisory disclosed
03/02/2026 +0 days VulDB entry created
03/03/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: corp.mediatek.com
Status: Confirmed

CVE: CVE-2026-20424 (🔒)
GCVE (CVE): GCVE-0-2026-20424
GCVE (VulDB): GCVE-100-348317
CNNVD: CNNVD-202603-237 - MediaTek Chipsets 安全漏洞

Entryinfo

Created: 03/02/2026 10:15
Updated: 03/03/2026 23:29
Changes: 03/02/2026 10:15 (54), 03/03/2026 19:33 (6), 03/03/2026 23:29 (11)
Complete: 🔍
Cache ID: 216::103

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