CVE-2025-20743 Use after free in MT2718, MT6761, MT6765, MT6768, MT6781, MT6853, MT6877, MT6886, MT6893, MT6897, MT6899, MT6983, MT6989, MT6991, MT8113, MT8163, MT8168, MT8169, MT8183, MT8186, MT8188, MT8195, MT8196, MT8321, MT8365, MT8385, MT8390, MT8391, MT8512, MT8516, MT8519, MT8676, MT8678, MT8695, MT8696, MT8698, MT8755, MT8766, MT8768, MT8771, MT8775, MT8781, MT8786, MT8788E, MT8791T, MT8792, MT8793, MT8796, MT8797, MT8798, MT8873, MT8883, MT8893
A use-after-free flaw in MediaTek SoC firmware allows local privilege escalation for attackers with System privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-20743?
CVE-2025-20743 is a medium-severity use after free vulnerability in Google Android, published on 4 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In clkdbg, there is a possible escalation of privilege due to use after free. 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: ALPS10136671; Issue ID: MSV-4651.
Weakness: CWE-416
Which versions are affected by CVE-2025-20743?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2025-20743?
No fix has been published for CVE-2025-20743 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-20743 being exploited?
There is no known exploitation of CVE-2025-20743 in the wild and no public exploit code.
Other vulnerabilities in Google Android
Sources
Also known as GHSA-4xwg-fxhm-6r9c.