What is CVE-2020-36991?

CVE-2020-36991 is a high-severity vulnerability in Sharemouse, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-01-28.

How severe is CVE-2020-36991?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Sharemouse

CVE-2020-36991

ShareMouse 5.0.43 contains an unquoted service path vulnerability that allows local users to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the insecure service path configuration by placing malicious executables in specific system directories to gain elevated access during service startup.

EPSS: 0.002 (5.6th percentile) — read the EPSS interpretation.

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.

Affected products

Sharemouse — versions 5.0.43

Weakness classification (CWE)

CWE-428 — Unquoted Search Path or Element

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2020-36991?: CVE-2020-36991 is a high-severity vulnerability in Sharemouse, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-01-28.
How severe is CVE-2020-36991?: High severity. CVSS v3 base score is 7.8 out of 10.