CVE-2026-20438 — Time-of-check Time-of-use (TOCTOU) Race Condition in INC Mediatek Chipset

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition4 documents4 sources
Severity
6.4MEDIUMNVD
EPSS
0.0%
top 99.74%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mediatek INC Mediatek ChipsetGoogle Android
Timeline
PublishedMar 2

Description

In MAE, there is a possible out of bounds write due to a race condition. 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: ALPS10431920; Issue ID: MSV-5835.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.5 | Impact: 5.9

Affected Packages2 packages

▶NVDgoogle/android15.0
▶CVEListV5mediatek_inc/mediatek_chipset11 versions+10

🔴Vulnerability Details

2
CVEList
CVE-2026-20438: In MAE, there is a possible out of bounds write due to a race condition↗2026-03-02
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GHSA
GHSA-4c3g-mgjr-mchg: In MAE, there is a possible out of bounds write due to a race condition↗2026-03-02
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🕵️Threat Intelligence

1
Wiz
CVE-2026-20438 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2026-20438 — INC Mediatek Chipset vulnerability | cvebase