Uncontrolled Search Path Element Affecting ultravnc/UltraVNC package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-ULTRAVNCULTRAVNC-15440734
- published9 Mar 2026
- disclosed9 Mar 2026
- creditUnknown
Introduced: 9 Mar 2026
CVE-2026-3787 (opens in a new tab)How to fix?
There is no fixed version for ultravnc/UltraVNC.
Overview
Affected versions of this package are vulnerable to Uncontrolled Search Path Element in the cryptbase.dll process of the Windows Service component. An attacker can execute arbitrary code with elevated privileges by placing a malicious DLL in a directory that is searched before the legitimate one.