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Vulnerability record · CVE-2020-37253 · published 19 June 2026

CVE-2020-37253: Unquoted search path vulnerability

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.

8.5 CVSS 4.0 High EPSS 0.16% · top 95.9% CWE-428 · Unquoted search path Deferred
8.5CVSS 4.0 base score
0.16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
29 Sep 2026Last modified by NVD

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://www.exploit-db.com/exploits/49004
https://www.vulncheck.com/advisories/winstep-unquoted-service-path-privilege-escalation

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Source: NIST National Vulnerability Database (record CVE-2020-37253), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.