CVE-2026-20421 — MediaTek, Inc. / MediaTek chipset

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
MediaTek, Inc. / MediaTek chipset	affected MT2735; affected MT6833; affected MT6853; affected MT6855; affected MT6873; affected MT6875; affected MT6877; affected MT6880; affected MT6883; affected MT6885; affected MT6889; affected MT6890; affected MT6891; affected MT6893; affected MT8791

CWE

CWE-125

References

https://corp.mediatek.com/product-security-bulletin/February-2026

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.