Overview
A high-severity buffer overflow vulnerability, identified as CVE-2025-13305, has been discovered in several D-Link router models. This flaw affects D-Link DWR-M920, DWR-M921, DWR-M960, DIR-822K, and DIR-825M devices running firmware version 1.01.07. The vulnerability allows a remote attacker to potentially execute arbitrary code on the affected device.
This article provides a detailed analysis of CVE-2025-13305, including technical specifics, potential impact, and recommended mitigation strategies.
Technical Details
The vulnerability resides within the handling of the host argument in the /boafrm/formTracerouteDiagnosticRun file. Improper input validation allows an attacker to inject an overly long string into the host parameter, leading to a buffer overflow condition. This overflow can overwrite adjacent memory regions, potentially allowing the attacker to gain control of the device.
The attack can be launched remotely, making it easily exploitable. Public exploits for this vulnerability are already available, increasing the risk of widespread attacks.
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) score for CVE-2025-13305 is 8.8, indicating a HIGH severity vulnerability.
- Base Score: 8.8
- Vector: (Details of CVSS vector should be here according to CVSS v3 details but not available. Assumed values) AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
This score reflects the ease of exploitation, the potential for remote execution, and the significant impact on confidentiality, integrity, and availability.
Possible Impact
Successful exploitation of CVE-2025-13305 can have severe consequences:
- Remote Code Execution (RCE): An attacker could execute arbitrary code on the router, potentially gaining complete control of the device.
- Data Breach: Sensitive information stored on or transmitted through the router could be compromised.
- Denial of Service (DoS): The router could be rendered unusable, disrupting network connectivity.
- Malware Propagation: The router could be used as a launchpad for further attacks on other devices on the network.
- Botnet Recruitment: Compromised routers can be added to botnets for malicious activities like DDoS attacks.
Mitigation and Patch Steps
To mitigate the risk of CVE-2025-13305, the following steps are recommended:
- Firmware Update: Immediately check the D-Link support website (https://www.dlink.com/) for a firmware update that addresses this vulnerability. Apply the update as soon as it becomes available.
- Disable Remote Management: If possible, disable remote management access to the router.
- Strong Password: Ensure that a strong, unique password is set for the router’s administrative interface.
- Network Segmentation: Consider segmenting your network to limit the impact of a potential compromise.
- Monitor Network Traffic: Monitor network traffic for suspicious activity that might indicate an attempted exploitation.
