If a malicious actor has write permissions to the root directory ( C:\ ) or the C:\Program Files\ directory, they can place a rogue executable named Program.exe or Active.exe in those paths. When the system reboots or the service restarts, Windows will execute the malicious file instead of the legitimate Active Webcam binary. Because services often run with elevated permissions (such as LocalSystem ), this vulnerability allows for local privilege escalation (LPE). Verifying the Vulnerability in Active Webcam 115
For an attacker to leverage this flaw, they need:
: Elevated system privileges, arbitrary code execution, and potential full system compromise. active webcam 115 unquoted service path patched
Active Webcam 11.5 is an older utility. Given the lack of recent security-focused updates from the vendor, users may consider more modern, actively maintained alternatives for webcam surveillance and streaming to ensure better long-term protection. Axis Communications CVE-2021-47790 Detail - NVD
"C:\Program Files\Active Webcam\Webcam.exe" Windows goes directly to the intended file. 🚀 Recommendation If a malicious actor has write permissions to
When a service path contains spaces and lacks quotes, Windows attempts to locate and execute programs at every break point created by the spaces. For example, if a service points to C:\Program Files\Active Webcam\WebcamService.exe , Windows interprets the spaces as delimiters and sequentially looks for: C:\Program.exe C:\Program Files\Active.exe C:\Program Files\Active Webcam\WebcamService.exe
Navigate to the following path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ Verifying the Vulnerability in Active Webcam 115 For
In the case of Active Webcam 115, the vulnerability was discovered in the software's service installation process. Specifically, the service path was not properly quoted, leaving a window of opportunity for an attacker to inject malicious code into the path.
Windows might look for a program named C:\Program.exe or C:\Program Files\Active.exe before reaching the actual webcam executable.
To understand the threat, one must first understand the mechanics of unquoted service path vulnerabilities in Windows. When a service is configured to start automatically with the operating system, the Windows Service Control Manager references a specific registry key: BINARY_PATH_NAME , which points to the executable file for that service.
The "unquoted service path" vulnerability remains one of the most common privilege escalation vectors in Windows environments. It occurs when a service executable path contains spaces and is not enclosed in quotation marks. This allows a local attacker to place a malicious executable in the path, which Windows then runs with elevated privileges (often NT AUTHORITY\SYSTEM ).