CVE-2026-20439
Received Received - Intake
Use-After-Free in imgsys Causes Local Denial of Service

Publication date: 2026-03-02

Last updated on: 2026-03-03

Assigner: MediaTek, Inc.

Description
In imgsys, there is a possible system crash due to use after free. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10431955; Issue ID: MSV-5826.
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Meta Information
Published
2026-03-02
Last Modified
2026-03-03
Generated
2026-06-16
AI Q&A
2026-03-02
EPSS Evaluated
2026-06-14
NVD
CVE-2026-20439
EUVD
EUVD-2026-9164
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
google android 15.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

This vulnerability exists in the imgsys component where a use after free error can cause a system crash. Essentially, the system attempts to use memory after it has been freed, which can destabilize the system.

Exploitation does not require user interaction but does require that the attacker already has System privilege.

Impact Analysis

The primary impact of this vulnerability is a local denial of service (DoS) condition, where the system may crash due to the use after free error.

Since exploitation requires System privilege, an attacker who already has high-level access could cause the system to become unavailable or unstable.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, apply the patch identified as ALPS10431955 provided by the vendor.

Since exploitation requires already having System privilege, restricting access to privileged accounts and monitoring for unusual activity can help reduce risk.

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