Modem OOB Read CVE-2026-20541 Remote DoS via Rogue Base Station
CVE-2026-20541 Published on October 5, 2026
In Modem, there is a possible out of bounds read due to a missing permission check. 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: MOLY01774038; Issue ID: MSV-8911.
Vulnerability Analysis
Weakness Type
Buffer Over-read
The software reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. This typically occurs when the pointer or its index is incremented to a position beyond the bounds of the buffer or when pointer arithmetic results in a position outside of the valid memory location to name a few. This may result in exposure of sensitive information or possibly a crash.
Affected Versions
MediaTek, Inc. MediaTek chipset:- Version MT2716 is affected.
- Version MT2735 is affected.
- Version MT2737 is affected.
- Version MT6739 is affected.
- Version MT6761 is affected.
- Version MT6762 is affected.
- Version MT6763 is affected.
- Version MT6765 is affected.
- Version MT6767 is affected.
- Version MT6768 is affected.
- Version MT6769 is affected.
- Version MT6771 is affected.
- Version MT6779 is affected.
- Version MT6781 is affected.
- Version MT6783 is affected.
- Version MT6785 is affected.
- Version MT6789 is affected.
- Version MT6813 is affected.
- Version MT6815 is affected.
- Version MT6833 is affected.
- Version MT6835 is affected.
- Version MT6853 is affected.
- Version MT6855 is affected.
- Version MT6858 is affected.
- Version MT6873 is affected.
- Version MT6875 is affected.
- Version MT6877 is affected.
- Version MT6878 is affected.
- Version MT6879 is affected.
- Version MT6880 is affected.
- Version MT6881 is affected.
- Version MT6883 is affected.
- Version MT6885 is affected.
- Version MT6886 is affected.
- Version MT6889 is affected.
- Version MT6890 is affected.
- Version MT6891 is affected.
- Version MT6893 is affected.
- Version MT6895 is affected.
- Version MT6896 is affected.
- Version MT6897 is affected.
- Version MT6899 is affected.
- Version MT6980 is affected.
- Version MT6982 is affected.
- Version MT6983 is affected.
- Version MT6985 is affected.
- Version MT6986 is affected.
- Version MT6988 is affected.
- Version MT6989 is affected.
- Version MT6990 is affected.
- Version MT6991 is affected.
- Version MT6993 is affected.
- Version MT8666 is affected.
- Version MT8667 is affected.
- Version MT8668 is affected.
- Version MT8673 is affected.
- Version MT8675 is affected.
- Version MT8676 is affected.
- Version MT8678 is affected.
- Version MT8755 is affected.
- Version MT8765 is affected.
- Version MT8766 is affected.
- Version MT8766R is affected.
- Version MT8768 is affected.
- Version MT8771 is affected.
- Version MT8775 is affected.
- Version MT8781 is affected.
- Version MT8786 is affected.
- Version MT8788 is affected.
- Version MT8788E is affected.
- Version MT8789 is affected.
- Version MT8791 is affected.
- Version MT8791T is affected.
- Version MT8792 is affected.
- Version MT8793 is affected.
- Version MT8795T is affected.
- Version MT8796 is affected.
- Version MT8797 is affected.
- Version MT8798 is affected.
- Version MT8863 is affected.
- Version MT8873 is affected.
- Version MT8883 is affected.
- Version MT8893 is affected.