0.0
NA
CVE-2026-20542
Apusys Use-After-Free Memory Corruption
Description

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.

INFO

Published Date :

Oct. 5, 2026, 2:16 a.m.

Last Modified :

Oct. 5, 2026, 2:16 a.m.

Remotely Exploit :

No
Affected Products

The following products are affected by CVE-2026-20542 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mediatek mt6878_firmware
2 Mediatek mt6897_firmware
3 Mediatek mt6899_firmware
4 Mediatek mt6989_firmware
5 Mediatek mt6991_firmware
6 Mediatek mt8678_firmware
7 Mediatek mt8796_firmware
8 Mediatek mt8792_firmware
9 Mediatek mt8793_firmware
10 Mediatek mt8196_firmware
11 Mediatek mt8188_firmware
12 Mediatek mt8370_firmware
13 Mediatek mt8371_firmware
14 Mediatek mt8390_firmware
15 Mediatek mt8391_firmware
16 Mediatek mt8395_firmware
17 Mediatek mt2718_firmware
18 Mediatek mt8171_firmware
19 Mediatek mt8189_firmware
Solution
Apply the vendor patch to fix the use-after-free memory corruption vulnerability.
  • Apply the available vendor patch.
  • Install updates for apusys.
  • Mitigate if patching is not immediately possible.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-20542.

URL Resource
https://www.mediatek.com/product-security-bulletin/October-2026
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-20542 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-20542 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-20542 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-20542 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Oct. 05, 2026

    Action Type Old Value New Value
    Added Description 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.
    Added CWE CWE-416
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/20xxx/CVE-2026-20542.json">CVE-2026-20542</a>
    Added Reference https://www.mediatek.com/product-security-bulletin/October-2026
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.