CVE-2025-20647 Null dereference in MT2735, MT2737, MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769K, MT6769S, MT6769T, MT6769Z, MT6771, MT6779, MT6781, MT6783, MT6785, MT6785T, MT6785U, MT6789, MT6833, MT6833P, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6980, MT6980D, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT8666, MT8667, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8795T, MT8797, MT8798
A missing bounds check in MediaTek modem firmware allows remote attackers to cause a system crash via a rogue base station.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-20647?
CVE-2025-20647 is a medium-severity vulnerability in Mediatek Nr15, published on 3 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In Modem, there is a possible system crash due to a missing bounds 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: MOLY00791311 / MOLY01067019; Issue ID: MSV-2721.
Weakness: CWE-476
Which versions are affected by CVE-2025-20647?
It affects 4 products.
Products include Mediatek Nr12a, Mediatek Nr13, Mediatek Nr15, Mediatek Nr16.
How do I fix CVE-2025-20647?
No fix has been published for CVE-2025-20647 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-20647 being exploited?
There is no known exploitation of CVE-2025-20647 in the wild and no public exploit code.
Sources
Also known as GHSA-wqcw-wh9g-67rg.