CVE-2026-20509 — MediaTek, Inc. / MediaTek chipset

Description (CNA)

In Power HAL, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11165543; Issue ID: MSV-9011.

Affected (CNA)

Vendor / product	Versions
MediaTek, Inc. / MediaTek chipset	affected MT2718; affected MT6739; affected MT6761; affected MT6765; affected MT6768; affected MT6769; affected MT6781; affected MT6789; affected MT6833; affected MT6835; affected MT6853; affected MT6855; affected MT6858; affected MT6877; affected MT6878; affected MT6879; affected MT6881; affected MT6883; affected MT6885; affected MT6886; affected MT6889; affected MT6893; affected MT6895; affected MT6897; affected MT6899; affected MT6983; affected MT6985; affected MT6989; affected MT6991; affected MT6993; affected MT8171; affected MT8186; affected MT8188; affected MT8189; affected MT8196; affected MT8668; affected MT8676; affected MT8678; affected MT8696; affected MT8793

Vendor / product

Versions

MediaTek, Inc. / MediaTek chipset

affected MT2718; affected MT6739; affected MT6761; affected MT6765; affected MT6768; affected MT6769; affected MT6781; affected MT6789; affected MT6833; affected MT6835; affected MT6853; affected MT6855; affected MT6858; affected MT6877; affected MT6878; affected MT6879; affected MT6881; affected MT6883; affected MT6885; affected MT6886; affected MT6889; affected MT6893; affected MT6895; affected MT6897; affected MT6899; affected MT6983; affected MT6985; affected MT6989; affected MT6991; affected MT6993; affected MT8171; affected MT8186; affected MT8188; affected MT8189; affected MT8196; affected MT8668; affected MT8676; affected MT8678; affected MT8696; affected MT8793

CWE

CWE-121

References

https://www.mediatek.com/product-security-bulletin/September-2026

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.