CVE-2026-20446

Name: CVE-2026-20446
Creator: NVD / NIST
Published: 2026-04-07T04:17:13.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2026-20446 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.19%

9.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mediatek	Mt6813 Firmware	All versions

References

https://corp.mediatek.com/product-security-bulletin/April-2026Vendor Advisory

Timeline

Published: Apr 7, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-20446?

How severe is CVE-2026-20446?

CVE-2026-20446 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2026-20446?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-20446?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST