CVE-2025-20753: Medium severity MediaTek Nr15 vulnerability
In Modem, there is a possible system crash due to an uncaught exception. 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: MOLY01689252; Issue ID: MSV-4841.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch MOLY01689252 - Compensating control
Mitigate remote denial of service risk by preventing UEs from connecting to rogue base stations (e.g., restrict/monitor allowable base stations per operator policy and use network controls to detect/deny suspicious access).
- Compensating control
Since user interaction is not needed for exploitation and a rogue base station can trigger the crash, enforce strong network-side access controls to reduce the likelihood of UEs attaching to attacker-controlled infrastructure.
Event History
Frequently Asked Questions
What is the severity of CVE-2025-20753?
CVE-2025-20753 is classified as a high severity vulnerability due to its potential for remote denial of service.
How do I fix CVE-2025-20753?
To fix CVE-2025-20753, apply the relevant patches provided by MediaTek in their security bulletin.
Who is affected by CVE-2025-20753?
CVE-2025-20753 affects certain MediaTek NR15 and NR16 modems connected to rogue base stations.
What can an attacker do with CVE-2025-20753?
An attacker can exploit CVE-2025-20753 to cause a system crash leading to denial of service for devices connected to a rogue base station.
Is user interaction required to exploit CVE-2025-20753?
No, user interaction is not needed for the exploitation of CVE-2025-20753.