Vulnerability record · CVE-2022-24750 · published 10 March 2022

CVE-2022-24750: Uvnc ultravnc improper privilege management vulnerability

Uvnc · Ultravnc

UltraVNC is a free and open source remote pc access software. A vulnerability has been found in versions prior to 1.3.8.0 in which the DSM plugin module, which allows a local authenticated user to achieve local privilege escalation (LPE) on a vulnerable system. The vulnerability has been fixed to allow loading of plugins from the installed directory. Affected users should upgrade their UltraVNC to 1.3.8.1. Users unable to upgrade should not install and run UltraVNC server as a service. It is advisable to create a scheduled task on a low privilege account to launch WinVNC.exe instead. There are no known workarounds if winvnc needs to be started as a service.

7.8 CVSS 3.1 High EPSS 0.27% · top 81.9% CWE-269 · Improper privilege management

7.8CVSS 3.1 base score, v2 7.2

0.27%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References

17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Ultravnc Uvnc

References

Link	Tags
https://github.com/bowtiejicode/UltraVNC-DSMPlugin-LPE	PatchThird Party Advisory
https://github.com/ultravnc/UltraVNC/commit/36a31b37b98f70c1db0428f5ad83170d604fb352	PatchThird Party Advisory
https://github.com/ultravnc/UltraVNC/security/advisories/GHSA-3mvp-cp5x-vj5g	Third Party Advisory
https://github.com/bowtiejicode/UltraVNC-DSMPlugin-LPE	PatchThird Party Advisory
https://github.com/ultravnc/UltraVNC/commit/36a31b37b98f70c1db0428f5ad83170d604fb352	PatchThird Party Advisory
https://github.com/ultravnc/UltraVNC/security/advisories/GHSA-3mvp-cp5x-vj5g	Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-24750), CISA KEV, FIRST EPSS (scores of 2026-10-07). This page is refreshed as NVD updates the record.