CVE-2026-20431

Name: CVE-2026-20431
Creator: NVD / NIST
Published: 2026-04-07T04:16:59.93+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2026-20431 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. In Modem, there is a possible system crash due to a logic error. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

In Modem, there is a possible system crash due to a logic error. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01106496; Issue ID: MSV-4467.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.31%

22.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-770

Affected Software

Vendor	Product	Versions
Mediatek	Mt6813 Firmware	All versions
Mediatek	Mt6815 Firmware	All versions
Mediatek	Mt6835 Firmware	All versions
Mediatek	Mt6878 Firmware	All versions
Mediatek	Mt6897 Firmware	All versions
Mediatek	Mt6899 Firmware	All versions
Mediatek	Mt6986 Firmware	All versions
Mediatek	Mt6991 Firmware	All versions
Mediatek	Mt6993 Firmware	All versions
Mediatek	Mt8668 Firmware	All versions
Mediatek	Mt8676 Firmware	All versions
Mediatek	Mt8678 Firmware	All versions
Mediatek	Mt8755 Firmware	All versions
Mediatek	Mt8775 Firmware	All versions
Mediatek	Mt8792 Firmware	All versions
Mediatek	Mt8793 Firmware	All versions
Mediatek	Mt8863 Firmware	All versions
Mediatek	Mt8873 Firmware	All versions
Mediatek	Mt8883 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-2026-20431?

How severe is CVE-2026-20431?

CVE-2026-20431 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2026-20431?

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-2026-20431?

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

Scan your code now

Source: NVD / NIST