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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-20542

In apusys, there is a possible memory corruption due to use after free.

MEDIUM 6.7EPSS 0.11%

Does this matter?

Lower severity and a low EPSS score (0.11%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1
6.7 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
0.11% probability · 1th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-416
Affected
mediatek/mt2718 firmware · mediatek/mt6878 firmware · mediatek/mt6897 firmware · mediatek/mt6899 firmware · mediatek/mt6989 firmware · mediatek/mt6991 firmware · mediatek/mt8171 firmware · mediatek/mt8188 firmware · mediatek/mt8189 firmware · mediatek/mt8196 firmware · mediatek/mt8370 firmware · mediatek/mt8371 firmware · mediatek/mt8390 firmware · mediatek/mt8391 firmware · mediatek/mt8395 firmware · mediatek/mt8678 firmware · mediatek/mt8792 firmware · mediatek/mt8793 firmware · mediatek/mt8796 firmware
Source
security@mediatek.com
EPSS trend
0%3%5%5 October 2026: 0.11%26 October 2026: 0.11%5 October 202626 October 2026

EPSS moved from 0.1% on 5 October 2026 to 0.1% on 26 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.