Vulnerabilities (CVE)

Filtered by vendor Uvnc Subscribe
Total 29 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2019-8262 2 Siemens, Uvnc 4 Sinumerik Access Mymachine\/p2p, Sinumerik Pcu Base Win10 Software\/ipc, Sinumerik Pcu Base Win7 Software\/ipc and 1 more 2026-06-17 7.5 HIGH 9.8 CRITICAL
UltraVNC revision 1203 has multiple heap buffer overflow vulnerabilities in VNC client code inside Ultra decoder, which results in code execution. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1204.
CVE-2019-8261 1 Uvnc 1 Ultravnc 2026-06-17 7.5 HIGH 9.8 CRITICAL
UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC code inside client CoRRE decoder, caused by multiplication overflow. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1200.
CVE-2019-8260 1 Uvnc 1 Ultravnc 2026-06-17 7.5 HIGH 9.8 CRITICAL
UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC client RRE decoder code, caused by multiplication overflow. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1200.
CVE-2019-8259 2 Siemens, Uvnc 4 Sinumerik Access Mymachine\/p2p, Sinumerik Pcu Base Win10 Software\/ipc, Sinumerik Pcu Base Win7 Software\/ipc and 1 more 2026-06-17 5.0 MEDIUM 7.5 HIGH
UltraVNC revision 1198 contains multiple memory leaks (CWE-655) in VNC client code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1199.
CVE-2019-8258 2 Siemens, Uvnc 4 Sinumerik Access Mymachine\/p2p, Sinumerik Pcu Base Win10 Software\/ipc, Sinumerik Pcu Base Win7 Software\/ipc and 1 more 2026-06-17 7.5 HIGH 9.8 CRITICAL
UltraVNC revision 1198 has a heap buffer overflow vulnerability in VNC client code which results code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199.
CVE-2018-15361 1 Uvnc 1 Ultravnc 2026-06-17 7.5 HIGH 9.8 CRITICAL
UltraVNC revision 1198 has a buffer underflow vulnerability in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199.
CVE-2026-4962 1 Uvnc 1 Ultravnc 2026-04-29 6.0 MEDIUM 7.0 HIGH
A security flaw has been discovered in UltraVNC up to 1.6.4.0. Affected by this issue is some unknown functionality in the library version.dll of the component Service. The manipulation results in uncontrolled search path. The attack needs to be approached locally. This attack is characterized by high complexity. The exploitation is known to be difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
CVE-2019-25563 1 Uvnc 1 Pchelpwarev2 2026-03-24 N/A 6.2 MEDIUM
PCHelpWareV2 1.0.0.5 contains a denial of service vulnerability that allows local attackers to crash the application by supplying a malformed image file. Attackers can trigger the vulnerability through the Create SC feature by selecting a crafted BMP file with an oversized buffer, causing the application to crash.
CVE-2019-25564 1 Uvnc 1 Pchelpwarev2 2026-03-24 N/A 5.5 MEDIUM
PCHelpWareV2 1.0.0.5 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the Group field. Attackers can paste a buffer overflow payload into the Group property field and click Ok to trigger an application crash.