CVE-2025-20703: Medium severity MediaTek Nr15 vulnerability
In Modem, there is a possible out of bounds read due to an incorrect 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: MOLY01599794; Issue ID: MSV-3708.
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 MOLY01599794 - Compensating control
If affected UEs can connect to rogue base stations, mitigate the remote denial-of-service risk by preventing UEs from connecting to untrusted/unauthorized base stations (e.g., enforce network access controls so UEs only attach to approved infrastructure).
Event History
Frequently Asked Questions
What is the severity of CVE-2025-20703?
CVE-2025-20703 is classified as a high severity vulnerability due to the potential for remote denial of service.
How do I fix CVE-2025-20703?
To fix CVE-2025-20703, ensure that you update to the latest firmware version provided by MediaTek for affected devices.
Who is affected by CVE-2025-20703?
CVE-2025-20703 affects devices using MediaTek NR15, NR16, NR17, and NR17R modem firmware.
Can CVE-2025-20703 be exploited remotely?
Yes, CVE-2025-20703 can be exploited remotely if a user equipment connects to a malicious base station.
Is user interaction required to exploit CVE-2025-20703?
No, user interaction is not required to exploit CVE-2025-20703.