MediaTek MT8883 Display use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in MediaTek MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT6993, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873 and MT8883. The affected element is an unknown function of the component Display. Such manipulation leads to use after free. This vulnerability is uniquely identified as CVE-2026-20443. Local access is required to approach this attack. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in MediaTek MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, MT6991, MT6993, MT8186, MT8188, MT8196, MT8667, MT8673, MT8676, MT8678, MT8765, MT8766, MT8768, MT8771, MT8781, MT8791T, MT8792, MT8793, MT8795T, MT8796, MT8798, MT8873 and MT8883 and classified as critical. Affected by this issue is an unknown code block of the component Display. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In display, there is a possible memory corruption due to use after free. 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: ALPS10436998; Issue ID: MSV-5722.

The advisory is shared for download at corp.mediatek.com. This vulnerability is handled as CVE-2026-20443 since 11/03/2025. The exploitation is known to be easy. The attack needs to be approached locally. Additional levels of successful authentication are required for exploitation. There are neither technical details nor an exploit publicly available.

Applying a patch is able to eliminate this problem.

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Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.7
VulDB Temp Score: 6.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 6.7
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / 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
03/04/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: corp.mediatek.com
Status: Confirmed

CVE: CVE-2026-20443 (🔒)
GCVE (CVE): GCVE-0-2026-20443
GCVE (VulDB): GCVE-100-348332

Entryinfo

Created: 03/02/2026 10:18
Updated: 03/04/2026 00:00
Changes: 03/02/2026 10:18 (54), 03/04/2026 00:00 (10)
Complete: 🔍
Cache ID: 216::103

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