Description

In Modem, there is a possible system crash due to improper input validation. 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: MOLY01738293; Issue ID: MSV-5922.

INFO

Published Date :

2026-02-02T08:14:41.044Z

Last Modified :

2026-03-30T13:02:38.436Z

Source :

MediaTek
AFFECTED PRODUCTS

The following products are affected by CVE-2026-20421 vulnerability.

Vendors Products
Mediatek
  • Mt2735
  • Mt6833
  • Mt6853
  • Mt6855
  • Mt6873
  • Mt6875
  • Mt6877
  • Mt6880
  • Mt6883
  • Mt6885
  • Mt6889
  • Mt6890
  • Mt6891
  • Mt6893
  • Mt8791
  • Nr15
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-20421.

URL Resource
https://corp.mediatek.com/product-security-bulletin/February-2026 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact