Vulnerability · Published Jun 19, 2026 · Assigned by VulnCheck
CVE-2020-37253Winstep 18.06.0096 Unquoted Service Path Privilege Escalation
High 7.8
In plain English
A high-severity security flaw in Winstep from Winstep. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 95.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Winstep 18.06.0096 contains an unquoted service path vulnerability in the Winstep Xtreme Service that allows local attackers to escalate privileges. Attackers can place malicious executables in the Program Files directory to be executed with LocalSystem privileges when the service starts.
Affected products (as reported)
Weakness: CWE-428 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- ExploitDB-49004 exploit
- VulnCheck Advisory: Winstep 18.06.0096 Unquoted Service Path Privilege Escalation third-party-advisory