Known Vulnerabilities for products from Uvnc

Listed below are 20 of the newest known vulnerabilities associated with the vendor "Uvnc".

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

Data on known vulnerable products is also displayed based on information from known CPEs, each product links to its respective vulnerability page.

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 2026-07-02
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 2026-07-02
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 2026-07-02
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 2026-07-02
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 2026-07-02
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 2026-07-02
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 2026-07-02
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 2026-07-02
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 2026-07-02
CVE-2026-4962 json A security flaw has been discovered in UltraVNC up to 1.6.4.0. Affected by this issue is some unknown functionality in the li... Not Provided 2026-03-27 2026-04-29
CVE-2026-3787 json A weakness has been identified in UltraVNC 1.6.4.0 on Windows. This affects an unknown function in the library cryptbase.dll ... Not Provided 2026-03-08 2026-04-29
CVE-2022-24750 json ** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new secur... 7.8 - HIGH 2022-03-10 2023-03-01
CVE-2019-8280 json UltraVNC revision 1203 has out-of-bounds access vulnerability in VNC client inside RAW decoder, which can potentially result ... 9.8 - CRITICAL 2019-03-08 2021-06-28
CVE-2019-8277 json UltraVNC revision 1211 contains multiple memory leaks (CWE-665) in VNC server code, which allows an attacker to read stack me... 7.5 - HIGH 2019-03-08 2021-06-28
CVE-2019-8276 json UltraVNC revision 1211 has a stack buffer overflow vulnerability in VNC server code inside file transfer request handler, whi... 7.5 - HIGH 2019-03-08 2020-10-22
CVE-2019-8275 json UltraVNC revision 1211 has multiple improper null termination vulnerabilities in VNC server code, which result in out-of-boun... 9.8 - CRITICAL 2019-03-08 2021-06-28
CVE-2019-8274 json UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer offer handler, which ... 9.8 - CRITICAL 2019-03-08 2020-10-22
CVE-2019-8273 json UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer request handler, whic... 9.8 - CRITICAL 2019-03-08 2020-10-22
CVE-2019-8272 json UltraVNC revision 1211 has multiple off-by-one vulnerabilities in VNC server code, which can potentially result in code execu... 9.8 - CRITICAL 2019-03-08 2020-10-22
CVE-2019-8271 json UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer handler, which can po... 9.8 - CRITICAL 2019-03-08 2020-10-19
Results limited to 20 most recent vulnerabilities

Known software with vulnerabilities from Uvnc

Type Vendor Product Version
ApplicationUvncUltravnc1.0.9.6.2
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