What is CVE-2025-54081?

CVE-2025-54081 is a medium-severity vulnerability in Lizardbyte Sunshine, classified under Unquoted Search Path or Element. CVSS score: 6.7/10. Published 2025-09-23.

How severe is CVE-2025-54081?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Vulnerability in Lizardbyte Sunshine

CVE-2025-54081

Sunshine is a self-hosted game stream host for Moonlight. Prior to version 2025.923.33222, the Windows service SunshineService is installed with an unquoted executable path. If Sunshine is installed in a directory whose name includes a space, the Service Control Manager (SCM) interprets the path incrementally and may execute a malicious binary placed earlier in the search string. This issue has been patched in version 2025.923.33222.

Published 2025-09-23 · last modified 2026-10-11.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (13.4th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.4% 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

Lizardbyte Sunshine — versions < 2025.923.33222
Microsoft Windows

Weakness classification (CWE)

CWE-428 — Unquoted Search Path or Element

References

github.com/LizardByte/Sunshine/security/advisories/GHSA-6p7j-5v8v-w45h (Exploit, Vendor Advisory)
github.com/LizardByte/Sunshine/commit/f22b00d6981f756d3531fba0028723d4a5065824 (Patch)
github.com/LizardByte/Sunshine/releases/tag/v2025.923.33222 (Release Notes)

Frequently asked questions

What is CVE-2025-54081?: CVE-2025-54081 is a medium-severity vulnerability in Lizardbyte Sunshine, classified under Unquoted Search Path or Element. CVSS score: 6.7/10. Published 2025-09-23.
How severe is CVE-2025-54081?: Medium severity. CVSS v3 base score is 6.7 out of 10.