Overview
CVE-2025-61610 is a high-severity vulnerability affecting NR (New Radio) modems. This vulnerability stems from improper input validation, potentially leading to a system crash and resulting in a remote denial of service (DoS) condition. Exploitation of this vulnerability requires no additional execution privileges.
This article provides a detailed analysis of CVE-2025-61610, including technical details, CVSS analysis, potential impact, and mitigation strategies.
Technical Details
The vulnerability lies in the NR modem’s handling of input data. Insufficient validation of the input allows a malicious actor to send crafted data packets that trigger a system crash within the modem. The exact mechanism of the crash is specific to the modem’s implementation but results in the modem becoming unresponsive and effectively denying service to the device.
The improper input validation allows the attacker to cause a buffer overflow or other memory corruption error leading to the system crash. The specific input parameters vulnerable would depend on the specific implementation of the NR modem.
CVSS Analysis
- CVSS Score: 7.5
- Severity: HIGH
A CVSS score of 7.5 indicates a high-severity vulnerability. This rating reflects the following factors:
- Attack Vector: Network (remote exploitation)
- Attack Complexity: Low (relatively easy to exploit)
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High (denial of service)
The high availability impact is the primary driver for the high severity rating, as successful exploitation results in a complete loss of service.
Possible Impact
Successful exploitation of CVE-2025-61610 can lead to:
- Denial of Service (DoS): The primary impact is a denial of service, rendering the device unable to connect to the network and perform its intended functions.
- Device Unresponsiveness: The affected modem becomes unresponsive, potentially requiring a device reboot to restore functionality.
- Network Disruption: Widespread exploitation could lead to network instability if many devices are simultaneously affected.
The remote nature of the vulnerability makes it particularly concerning, as attackers can potentially exploit it from a distance without requiring physical access to the device.
Mitigation or Patch Steps
The primary mitigation strategy is to apply the security patch provided by the modem vendor. Contact your device manufacturer for specific instructions on updating your device’s firmware. If patches are not yet available, consider the following temporary mitigation measures:
- Network Monitoring: Implement network monitoring to detect and block suspicious traffic patterns that may be indicative of exploitation attempts.
- Firewall Rules: Configure firewall rules to restrict access to the affected modem from untrusted networks.
- Vendor Coordination: Coordinate with the modem vendor to obtain more specific guidance and assistance.
It’s critical to prioritize patching as soon as updates become available, as this is the most effective way to address the vulnerability.
