CVE-2026-20542: Use After Free
Published Oct 5, 2026
·Updated
In apusys, 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: ALPS11076799; Issue ID: MSV-8143.
Affected Software
39 affected components
MediaTek apusys
All of the following
MediaTek Mt2718 Firmware
MediaTek Mt2718
All of the following
MediaTek Mt6878 Firmware
MediaTek Mt6878
All of the following
MediaTek Mt6897 Firmware
MediaTek Mt6897
All of the following
MediaTek Mt6899 Firmware
MediaTek Mt6899
All of the following
MediaTek Mt6989 Firmware
MediaTek Mt6989
All of the following
MediaTek Mt6991 Firmware
MediaTek Mt6991
All of the following
MediaTek Mt8171 Firmware
MediaTek Mt8171
All of the following
MediaTek Mt8188 Firmware
MediaTek Mt8188
All of the following
MediaTek Mt8189 Firmware
MediaTek Mt8189
All of the following
MediaTek Mt8196 Firmware
MediaTek Mt8196
All of the following
MediaTek Mt8370 Firmware
MediaTek Mt8370
All of the following
MediaTek Mt8371 Firmware
MediaTek Mt8371
All of the following
MediaTek Mt8390 Firmware
MediaTek Mt8390
All of the following
MediaTek Mt8391 Firmware
MediaTek Mt8391
All of the following
MediaTek Mt8395 Firmware
MediaTek Mt8395
All of the following
MediaTek Mt8678 Firmware
MediaTek Mt8678
All of the following
MediaTek Mt8792 Firmware
MediaTek Mt8792
All of the following
MediaTek Mt8793 Firmware
MediaTek Mt8793
All of the following
MediaTek Mt8796 Firmware
MediaTek Mt8796
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
apusysto a version that resolves this vulnerability.Patch ALPS11076799
Event History
Oct 5, 2026
CVE Published
via MITRE·01:40 AM
Data Sourced
via MITRE·01:40 AM
DescriptionWeakness
Data Sourced
via NVD·02:16 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What level of access must an attacker already have?
The attacker must already have obtained the System privilege. The issue is described as enabling local escalation of privilege from that position.
2
Is user interaction required for exploitation?
No. The advisory states that user interaction is not needed.
3
Which identifiers can be used to track the vendor fix?
The patch is identified as ALPS11076799, and the associated issue ID is MSV-8143.