Is CVE-2020-37253 actively exploited?

No active exploitation of CVE-2020-37253 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-37253 be exploited remotely?

No. CVE-2020-37253 requires local access to exploit.

What is the CVSS score of CVE-2020-37253?

CVE-2020-37253 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2020-37253

CWE-428Published: June 19, 2026· Updated: Jun 23, 2026

7.8

CVSS v3.1

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.

NVD Source

Technical Analysis

CVE-2020-37253 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.