Is CVE-2026-20401 actively exploited?

CVE-2026-20401 has no public evidence of in-the-wild exploitation as of 2026-02-17.

What is the CVSS score for CVE-2026-20401?

CVE-2026-20401 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2026-20401?

Patch guidance is available from mediatek security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-20401.

Fix CVE-2026-20401 - HIGH mediatek nr15

Description

In Modem, there is a possible system crash due to an uncaught exception. 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: MOLY01738310; Issue ID: MSV-5933.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-617 CWE-754

Metadata

Primary Vendor: MEDIATEK
Published: 2/2/2026
Last Modified: 2/17/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mediatek : nr15

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-20401. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-20401

View on NIST NVD

CVE-2026-20401 vulnerability