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Uvnc

16 known vulnerabilities

2
CRITICAL
7
HIGH
6
MEDIUM
1
LOW

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ultravnc 14 pchelpwarev2 2
16 CVEs
9.8
CVE-2026-7840

UltraVNC repeater through 1.8.2.2 contains a global buffer overflow in its embedded HTTP administration server. The func

9.1
CVE-2026-7839

UltraVNC repeater through 1.8.2.2 initializes the HTTP administration server with a hardcoded default password. In repea

8.8
CVE-2026-7838

UltraVNC viewer through 1.8.2.2 contains an integer overflow leading to a heap buffer overflow in the RFB protocol failu

7.6
CVE-2026-7831

UltraVNC viewer through 1.8.2.2 contains an off-by-one stack buffer overflow in the RFB ServerInit message handler. In v

7.4
CVE-2026-7830

UltraVNC through 1.8.2.2 uses inadequate cryptography in the MS-Logon II authentication scheme (rfbUltraVNC_MsLogonIIAut

7.2
CVE-2026-7829

UltraVNC repeater through 1.8.2.2 contains a post-authentication out-of-bounds write in the allow/deny rule parser. In r

5.3
CVE-2026-7828

UltraVNC repeater through 1.8.2.2 contains an integer overflow in the HTTP request logging path. In repeater/webgui/sett

3.7
CVE-2026-44042

UltraVNC repeater through 1.8.2.2 contains an off-by-one error in the Base64 decode helper used for HTTP Basic authentic

4.3
CVE-2026-44041

UltraVNC through 1.8.2.2 contains an out-of-bounds read in the wide-string to multibyte conversion helper. In rfb/dh.cpp

4.8
CVE-2026-44040

UltraVNC through 1.8.2.2 uses a cryptographically weak pseudo-random number generator to produce VNC authentication chal

7.0
CVE-2026-4962

A security flaw has been discovered in UltraVNC up to 1.6.4.0. Affected by this issue is some unknown functionality in t

5.5
CVE-2019-25564

PCHelpWareV2 1.0.0.5 contains a denial of service vulnerability that allows local attackers to crash the application by

6.2
CVE-2019-25563

PCHelpWareV2 1.0.0.5 contains a denial of service vulnerability that allows local attackers to crash the application by

7.0
CVE-2026-3787

A weakness has been identified in UltraVNC 1.6.4.0 on Windows. This affects an unknown function in the library cryptbase

7.5
CVE-2020-37133

UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in the Repeater Host configuration field that allow

6.2
CVE-2020-37132

UltraVNC Launcher 1.2.4.0 contains a denial of service vulnerability in its password configuration properties that allow

Frequently Asked Questions

How many CVEs affect Uvnc?

Uvnc has 16 CVE records in our database, including 2 critical and 7 high severity vulnerabilities.

What are the most severe Uvnc vulnerabilities?

Uvnc has 2 critical severity (CVSS 9.0+) and 7 high severity (CVSS 7.0-8.9) vulnerabilities. Review the list above sorted by publication date to find the most recent high-severity issues.

How can I scan for Uvnc vulnerabilities?

CyberStrike's AI-powered security agents automatically detect vulnerabilities in Uvnc products across your infrastructure. The platform provides continuous pentesting, DAST scanning, and real-time vulnerability monitoring with actionable remediation guidance.

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