Overview
A high-severity vulnerability, identified as CVE-2025-13548, has been discovered in D-Link DIR-822K and DWR-M920 routers. This vulnerability, a buffer overflow, allows a remote attacker to potentially execute arbitrary code on the affected devices. This article provides a detailed analysis of the vulnerability, its potential impact, and recommended mitigation steps.
Technical Details
CVE-2025-13548 affects D-Link DIR-822K and DWR-M920 routers running firmware versions 1.00_20250513164613 and 1.1.50, respectively. The vulnerability resides in the /boafrm/formFirewallAdv component. By manipulating the submit-url argument, an attacker can trigger a buffer overflow, potentially leading to arbitrary code execution. The exploit is publicly available, increasing the risk of exploitation.
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) assigns CVE-2025-13548 a score of 8.8, indicating a HIGH severity. This score reflects the vulnerability’s potential for remote exploitation and the significant impact it could have on affected devices.
Possible Impact
Successful exploitation of CVE-2025-13548 could have severe consequences, including:
- Remote Code Execution: An attacker could execute arbitrary code on the router, potentially gaining complete control of the device.
- Data Theft: Compromised routers can be used to intercept and steal sensitive data transmitted over the network.
- Denial of Service: The vulnerability could be exploited to cause the router to crash, leading to a denial of service for all connected devices.
- Botnet Recruitment: Compromised routers can be incorporated into botnets, used for malicious activities such as DDoS attacks.
Mitigation and Patch Steps
To mitigate the risk posed by CVE-2025-13548, users of D-Link DIR-822K and DWR-M920 routers are strongly advised to take the following actions:
- Check for Firmware Updates: Visit the D-Link support website to determine if a firmware update is available for your router model.
- Apply the Patch: If a firmware update is available, download and install it immediately following the instructions provided by D-Link.
- Disable Remote Management: If remote management is not required, disable it to reduce the attack surface.
- Use Strong Passwords: Ensure that you are using a strong, unique password for your router’s administration interface.
- Monitor Network Traffic: Monitor your network traffic for any unusual activity that might indicate a compromise.
