Overview
CVE-2025-11132 is a high-severity vulnerability discovered in NR (New Radio) modems. This vulnerability stems from improper input validation, which can be exploited by a remote attacker to cause a system crash, leading to a denial-of-service (DoS) condition. No additional execution privileges are required to exploit this flaw.
Published on 2025-12-01T08:15:47.350, this vulnerability poses a significant risk to devices using affected NR modems.
Technical Details
The vulnerability lies in how the NR modem handles specific input data. Due to insufficient validation of the input, a specially crafted packet can trigger an unexpected state within the modem’s firmware. This, in turn, can lead to a system crash and complete disruption of modem functionality, resulting in a denial-of-service condition.
The exact nature of the vulnerable input and the affected code sections are typically detailed in vendor security advisories, which should be consulted for in-depth technical information.
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) assigns CVE-2025-11132 a score of 7.5, categorizing it as a HIGH severity vulnerability.
This score reflects the following factors:
- Attack Vector: Network – The vulnerability can be exploited remotely.
- Attack Complexity: Low – Exploitation is relatively easy.
- Privileges Required: None – No user privileges are needed to trigger the vulnerability.
- User Interaction: None – No user interaction is required for exploitation.
- Scope: Changed – An exploitation affects resources beyond the component that is vulnerable
- Confidentiality Impact: None – There is no impact on confidentiality.
- Integrity Impact: None – There is no impact on integrity.
- Availability Impact: High – The vulnerability leads to a complete denial of service.
Possible Impact
A successful exploit of CVE-2025-11132 can lead to the following consequences:
- Denial of Service (DoS): The primary impact is a complete disruption of modem functionality. Devices will lose network connectivity, affecting critical services like voice calls, data transmission, and emergency communication.
- Device Unresponsiveness: The system crash might render the entire device unresponsive, requiring a reboot or more extensive recovery procedures.
- Network Disruptions: Widespread exploitation could lead to significant network disruptions, particularly in areas relying heavily on affected devices.
Mitigation and Patch Steps
The primary mitigation for CVE-2025-11132 is to apply the security patch provided by the NR modem vendor. Follow these steps:
- Identify Affected Devices: Determine which devices in your environment utilize the vulnerable NR modem.
- Check for Updates: Regularly check for firmware updates or security patches from the device manufacturer or modem vendor (e.g., Unisoc).
- Apply the Patch: Install the provided security patch as soon as it becomes available. Follow the vendor’s instructions carefully.
- Monitor for Anomalies: After applying the patch, monitor devices for any unusual behavior or performance issues.
- Network Segmentation: Consider network segmentation to limit the potential impact of a successful exploit on other devices.
