CVE-2025-20708 Memory corruption in MT2735, MT2737, MT6813, MT6815, MT6833, MT6833P, MT6835, MT6835T, MT6853, MT6853T, MT6855, MT6855T, MT6873, MT6875, MT6875T, MT6877, MT6877T, MT6877TT, MT6878, MT6878M, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895TT, MT6896, MT6897, MT6899, MT6980, MT6980D, MT6983, MT6983T, MT6985, MT6985T, MT6989, MT6989T, MT6990, MT6991, MT8673, MT8675, MT8676, MT8678, MT8771, MT8791, MT8791T, MT8792, MT8795T, MT8797, MT8798, MT8863, MT8873, MT8883, MT8893
Remote attackers can escalate privileges via out-of-bounds write in MediaTek modem firmware by connecting a device to 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
- Available
What is CVE-2025-20708?
CVE-2025-20708 is a high-severity memory corruption vulnerability in Mediatek Nr15, published on 1 Sep 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 out of bounds write due to an incorrect bounds check. This could lead to remote escalation of privilege, 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: MOLY01123853; Issue ID: MSV-4131.
Weakness: CWE-787
Which versions are affected by CVE-2025-20708?
It affects 4 products.
Products include Mediatek Nr15, Mediatek Nr16, Mediatek Nr17, Mediatek Nr17r.
How do I fix CVE-2025-20708?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-20708 being exploited?
There is no known exploitation of CVE-2025-20708 in the wild and no public exploit code.
Other vulnerabilities in Mediatek Nr15
- CVE-2024-20082 Memory corruption in MT2735, MT2737, MT6833, MT6835, MT6835T, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895T, MT6896, MT6897, MT6980, MT6980D, MT6983, MT6985, MT6989, MT6990
- CVE-2024-20094 Denial of service in MT2735, MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8675, MT8771, MT8791, MT8791T, MT8797
- CVE-2024-20003 Denial of service in MT2735, MT6297, MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8675, MT8791, MT8791T, MT8797
- CVE-2024-20004 Denial of service in MT2735, MT6297, MT6833, MT6853, MT6855, MT6873, MT6875, MT6875T, MT6877, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT8675, MT8791, MT8791T, MT8797
- CVE-2023-32886 Memory corruption in MT2735, MT6813, MT6833, MT6833P, MT6835, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6877T, MT6878, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6895T, MT6896, MT6897, MT6980, MT6980D, MT6983T, MT6983W, MT6983Z, MT6985, MT6985T, MT6989, MT6990, MT8673, MT8675, MT8676, MT8791, MT8791T, MT8792, MT8796, MT8797, MT8798
Sources
Also known as A-429908202, ASB-A-429908202, GHSA-7744-g43m-rwfw, M-MOLY01123853.