CVE-2020-37253

Name: CVE-2020-37253
Creator: NVD / NIST
Published: 2026-06-19T15:16:34.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.5/10EPSS 0.11%

Last modified Jun 23, 2026

CVE-2020-37253 is a high-severity vulnerability rated 8.5/10 on the CVSS scale. 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.. EPSS estimates a 0.11% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

8.5/10

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:X/V:X/RE:X/U:X

EPSS Probability

0.11%

1.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-428

References

Timeline

Published: Jun 19, 2026
Last Modified: Jun 23, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2020-37253?

How severe is CVE-2020-37253?

CVE-2020-37253 has a CVSS score of 8.5/10 (HIGH severity). The EPSS model estimates a 0.11% probability of exploitation in the next 30 days.

How do I fix CVE-2020-37253?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-37253?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST