CVE-2026-20446 — Out-of-bounds Write in INC Mediatek Chipset

CWE-787 — Out-of-bounds WriteCWE-190 — Integer Overflow or Wraparound3 documents3 sources
Severity
4.3MEDIUMNVD
EPSS
0.0%
top 95.24%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Mediatek INC Mediatek Chipset
Timeline
PublishedApr 7

Description

In sec boot, there is a possible out of bounds write due to an integer overflow. This could lead to local denial of service, if an attacker has physical access to the device, with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS09963054; Issue ID: MSV-3899.

CVSS vector

CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 0.7 | Impact: 3.6

Affected Packages1 packages

🔴Vulnerability Details

2
GHSA
GHSA-xv4p-823r-9vr8: In sec boot, there is a possible out of bounds write due to an integer overflow↗2026-04-07
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CVEList
CVE-2026-20446: In sec boot, there is a possible out of bounds write due to an integer overflow↗2026-04-07
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CVE-2026-20446 — Out-of-bounds Write | cvebase