Ultravnc

3 CVEs product

Monthly

CVE-2026-3787 HIGH This Week

UltraVNC 1.6.4.0 on Windows contains an uncontrolled search path vulnerability in cryptbase.dll that allows local authenticated attackers with low privileges to achieve arbitrary code execution through DLL hijacking. Successful exploitation requires local access and considerable technical complexity, though the vendor has not provided a patch despite early disclosure notification. This vulnerability carries a high impact rating with potential for complete system compromise (confidentiality, integrity, and availability).

Windows Ultravnc
NVD VulDB
CVSS 3.1
7.0
EPSS
0.0%
CVE-2020-37133 HIGH POC This Week

UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in the Repeater Host configuration field that allows attackers to crash the application. Attackers can paste an overly long string of 300 characters into the Repeater Host property to trigger an application crash. [CVSS 7.5 HIGH]

Denial Of Service Ultravnc
NVD Exploit-DB
CVSS 3.1
7.5
EPSS
0.0%
CVE-2020-37132 MEDIUM POC This Month

UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in its password configuration properties that allows local attackers to crash the application. [CVSS 6.2 MEDIUM]

Denial Of Service Ultravnc
NVD Exploit-DB
CVSS 3.1
6.2
EPSS
0.0%
CVE-2026-3787
EPSS 0% CVSS 7.0
HIGH This Week

UltraVNC 1.6.4.0 on Windows contains an uncontrolled search path vulnerability in cryptbase.dll that allows local authenticated attackers with low privileges to achieve arbitrary code execution through DLL hijacking. Successful exploitation requires local access and considerable technical complexity, though the vendor has not provided a patch despite early disclosure notification. This vulnerability carries a high impact rating with potential for complete system compromise (confidentiality, integrity, and availability).

Windows Ultravnc
NVD VulDB
CVE-2020-37133
EPSS 0% CVSS 7.5
HIGH POC This Week

UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in the Repeater Host configuration field that allows attackers to crash the application. Attackers can paste an overly long string of 300 characters into the Repeater Host property to trigger an application crash. [CVSS 7.5 HIGH]

Denial Of Service Ultravnc
NVD Exploit-DB
CVE-2020-37132
EPSS 0% CVSS 6.2
MEDIUM POC This Month

UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in its password configuration properties that allows local attackers to crash the application. [CVSS 6.2 MEDIUM]

Denial Of Service Ultravnc
NVD Exploit-DB

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