Known Vulnerabilities for UltraVNC by Uvnc

Listed below are 10 of the newest known vulnerabilities associated with "UltraVNC" by "Uvnc".

These CVEs are retrieved based on exact matches on listed software, hardware, and vendor information (CPE data) as well as a keyword search to ensure the newest vulnerabilities with no officially listed software information are still displayed.

Data on known vulnerable versions is also displayed based on information from known CPEs

Known Vulnerabilities

CVE Shortened Description Severity Publish Date Last Modified
CVE-2026-44042 json UltraVNC repeater through 1.8.2.2 contains an off-by-one error in the Base64 decode helper used for HTTP Basic authentication... Not Provided 2026-07-01 2026-07-01
CVE-2026-44041 json UltraVNC through 1.8.2.2 contains an out-of-bounds read in the wide-string to multibyte conversion helper. In rfb/dh.cpp:204,... Not Provided 2026-07-01 2026-07-01
CVE-2026-44040 json UltraVNC through 1.8.2.2 uses a cryptographically weak pseudo-random number generator to produce VNC authentication challenge... Not Provided 2026-07-01 2026-07-01
CVE-2026-7840 json UltraVNC repeater through 1.8.2.2 contains a global buffer overflow in its embedded HTTP administration server. The functions... Not Provided 2026-07-01 2026-07-01
CVE-2026-7839 json UltraVNC repeater through 1.8.2.2 initializes the HTTP administration server with a hardcoded default password. In repeater/w... Not Provided 2026-07-01 2026-07-01
CVE-2026-7838 json UltraVNC viewer through 1.8.2.2 contains an integer overflow leading to a heap buffer overflow in the RFB protocol failure-re... Not Provided 2026-07-01 2026-07-01
CVE-2026-7831 json UltraVNC viewer through 1.8.2.2 contains an off-by-one stack buffer overflow in the RFB ServerInit message handler. In vncvie... Not Provided 2026-07-01 2026-07-01
CVE-2026-7830 json UltraVNC through 1.8.2.2 uses inadequate cryptography in the MS-Logon II authentication scheme (rfbUltraVNC_MsLogonIIAuth). I... Not Provided 2026-07-01 2026-07-01
CVE-2026-7829 json UltraVNC repeater through 1.8.2.2 contains a post-authentication out-of-bounds write in the allow/deny rule parser. In repeat... Not Provided 2026-07-01 2026-07-01
CVE-2026-7828 json UltraVNC repeater through 1.8.2.2 contains an integer overflow in the HTTP request logging path. In repeater/webgui/settings.... Not Provided 2026-07-01 2026-07-01
Results limited to 10 most recent vulnerabilities

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationUvncUltravnc1.2.2.4
ApplicationUvncUltravnc1.2.2.3
ApplicationUvncUltravnc1.2.2.2
ApplicationUvncUltravnc1.2.1.7
ApplicationUvncUltravnc1.2.1.6
ApplicationUvncUltravnc1.2.1.2
ApplicationUvncUltravnc1.2.1.0
ApplicationUvncUltravnc1.2.0.9
ApplicationUvncUltravnc1.2.0.5
ApplicationUvncUltravnc1.1.9.6
ApplicationUvncUltravnc1.1.9.3
ApplicationUvncUltravnc1.1.8.9
ApplicationUvncUltravnc1.0.9.6.2
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