CVE-2020-36986
Published: 28 January 2026
Summary
CVE-2020-36986 is a high-severity Unquoted Search Path or Element (CWE-428) vulnerability in Preyproject (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 5.5th 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 RA-5 (Vulnerability Monitoring and Scanning).
Deeper analysis
CVE-2020-36986 is an unquoted service path vulnerability affecting Prey 1.9.6, specifically in the CronService component. This flaw, classified under CWE-428, enables local users to potentially execute arbitrary code with elevated privileges by exploiting the unquoted path in the service configuration. The vulnerability carries a CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high impact with low attack complexity and requiring only local access and low privileges.
A local attacker with low-privileged user access can exploit this vulnerability by placing a malicious executable in a directory that precedes the legitimate CronService binary in the system's PATH search order. When the service starts during application startup or system reboot, the malicious code executes with the elevated privileges of the service, potentially granting full system compromise including unauthorized data access, modification, or disruption.
Mitigation guidance is available in vendor and advisory resources, including the Prey project website (https://preyproject.com/), a proof-of-concept exploit on Exploit-DB (https://www.exploit-db.com/exploits/48967), and a detailed advisory from VulnCheck (https://www.vulncheck.com/advisories/prey-cronservice-unquoted-service-path), which likely outline patching to version beyond 1.9.6 or service reconfiguration to quote paths properly. A public exploit exists, highlighting the need for immediate remediation on affected systems.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2020-30894
Vulnerability details
Prey 1.9.6 contains an unquoted service path vulnerability that allows local users to potentially execute code with elevated privileges. Attackers can exploit the unquoted path in the CronService to insert malicious code that would execute during application startup or system…
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- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unquoted service path (CWE-428) in CronService directly enables path interception by unquoted path for local privilege escalation to SYSTEM via malicious executable placement.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Establishes and enforces secure configuration settings for services, directly preventing unquoted service path vulnerabilities like CVE-2020-36986 by requiring quoted paths.
Requires identification, reporting, and correction of system flaws such as the unquoted CronService path, enabling patching or reconfiguration to eliminate the vulnerability.
Vulnerability scanning tools detect unquoted service path issues in CronService, allowing proactive remediation before local privilege escalation exploits.