CVE-2021-47762
Published: 15 January 2026
Summary
CVE-2021-47762 is a high-severity Unquoted Search Path or Element (CWE-428) vulnerability in Httpdebugger (inferred from references). Its CVSS base score is 8.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Path Interception by Unquoted Path (T1574.009); ranked at the 1.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 CM-6 (Configuration Settings) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2021-47762 is an unquoted service path vulnerability affecting HTTPDebuggerPro version 9.11. The issue stems from an unquoted binary path in the service configuration, which enables local attackers to potentially execute arbitrary code with elevated system privileges by placing malicious executables in specific directories that the service searches before locating the legitimate binary.
Local attackers with low privileges can exploit this vulnerability due to its CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). By leveraging the unquoted path, they can inject a malicious executable that the service executes instead of the intended program, resulting in high confidentiality, integrity, and availability impacts through elevated access to the system.
References include an exploit at https://www.exploit-db.com/exploits/50545 and the vendor site at https://www.httpdebugger.com. No specific mitigation or patch details are detailed in the available information.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-2774
Vulnerability details
HTTPDebuggerPro 9.11 contains an unquoted service path vulnerability that allows local attackers to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the unquoted binary path in the service configuration to inject malicious executables and gain elevated access…
more
to the system.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct match to unquoted service binary path enabling path interception for privilege escalation via malicious executable placement.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Timely identification, reporting, and correction of the unquoted service path flaw directly prevents local attackers from executing arbitrary code with elevated privileges.
Establishing and enforcing secure configuration settings for services ensures binary paths are properly quoted, blocking exploitation of unquoted paths.
Configuring systems to provide only least functionality disables unnecessary vulnerable services like HTTPDebuggerPro, eliminating the attack surface.