Vulnerability in Winstep
CVE-2020-37253
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (4.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Winstep — versions 18.06.0096
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/49004 (exploit)
- www.vulncheck.com/advisories/winstep-unquoted-service-path-privilege-escalation (third-party-advisory)
Frequently asked questions
- What is CVE-2020-37253?
- CVE-2020-37253 is a high-severity vulnerability in Winstep, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-06-19.
- How severe is CVE-2020-37253?
- High severity. CVSS v3 base score is 7.8 out of 10.