CVE-2026-20420 — MediaTek, Inc. / MediaTek chipset

Description (CNA)

In Modem, there is a possible system crash due to incorrect error handling. 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: MOLY01738313; Issue ID: MSV-5935.

Affected (CNA)

Vendor / product	Versions
MediaTek, Inc. / MediaTek chipset	affected MT2735; affected MT2737; affected MT6813; affected MT6815; affected MT6833; affected MT6835; affected MT6853; affected MT6855; affected MT6858; affected MT6873; affected MT6875; affected MT6877; affected MT6878; affected MT6879; affected MT6880; affected MT6883; affected MT6885; affected MT6886; affected MT6889; affected MT6890; affected MT6891; affected MT6893; affected MT6895; affected MT6896; affected MT6897; affected MT6899; affected MT6980; affected MT6983; affected MT6985; affected MT6986; affected MT6989; affected MT6990; affected MT6991; affected MT6993; affected MT8676; affected MT8791

Vendor / product

Versions

MediaTek, Inc. / MediaTek chipset

affected MT2735; affected MT2737; affected MT6813; affected MT6815; affected MT6833; affected MT6835; affected MT6853; affected MT6855; affected MT6858; affected MT6873; affected MT6875; affected MT6877; affected MT6878; affected MT6879; affected MT6880; affected MT6883; affected MT6885; affected MT6886; affected MT6889; affected MT6890; affected MT6891; affected MT6893; affected MT6895; affected MT6896; affected MT6897; affected MT6899; affected MT6980; affected MT6983; affected MT6985; affected MT6986; affected MT6989; affected MT6990; affected MT6991; affected MT6993; affected MT8676; 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.