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Total 29 CVE
CVE Vendors Products Updated CVSS v3.1
CVE-2014-8240 2 Redhat, Tigervnc 2 Enterprise Linux, Tigervnc 2025-04-12 N/A
Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow, a similar issue to CVE-2014-6051.
CVE-2011-1775 2 Redhat, Tigervnc 2 Enterprise Linux, Tigervnc 2025-04-11 N/A
The CSecurityTLS::processMsg function in common/rfb/CSecurityTLS.cxx in the vncviewer component in TigerVNC 1.1beta1 does not properly verify the server's X.509 certificate, which allows man-in-the-middle attackers to spoof a TLS VNC server via an arbitrary certificate.
CVE-2020-26117 4 Debian, Opensuse, Redhat and 1 more 4 Debian Linux, Leap, Enterprise Linux and 1 more 2024-11-21 8.1 High
In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0, viewers mishandle TLS certificate exceptions. They store the certificates as authorities, meaning that the owner of a certificate could impersonate any server after a client had added an exception.
CVE-2019-15695 3 Opensuse, Redhat, Tigervnc 3 Leap, Enterprise Linux, Tigervnc 2024-11-21 7.2 High
TigerVNC version prior to 1.10.1 is vulnerable to stack buffer overflow, which could be triggered from CMsgReader::readSetCursor. This vulnerability occurs due to insufficient sanitization of PixelFormat. Since remote attacker can choose offset from start of the buffer to start writing his values, exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.
CVE-2019-15694 3 Opensuse, Redhat, Tigervnc 3 Leap, Enterprise Linux, Tigervnc 2024-11-21 7.2 High
TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which could be triggered from DecodeManager::decodeRect. Vulnerability occurs due to the signdness error in processing MemOutStream. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.
CVE-2019-15693 2 Redhat, Tigervnc 2 Enterprise Linux, Tigervnc 2024-11-21 7.2 High
TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which occurs in TightDecoder::FilterGradient. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.
CVE-2019-15692 3 Opensuse, Redhat, Tigervnc 3 Leap, Enterprise Linux, Tigervnc 2024-11-21 7.2 High
TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow. Vulnerability could be triggered from CopyRectDecoder due to incorrect value checks. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.
CVE-2019-15691 3 Opensuse, Redhat, Tigervnc 3 Leap, Enterprise Linux, Tigervnc 2024-11-21 7.2 High
TigerVNC version prior to 1.10.1 is vulnerable to stack use-after-return, which occurs due to incorrect usage of stack memory in ZRLEDecoder. If decoding routine would throw an exception, ZRLEDecoder may try to access stack variable, which has been already freed during the process of stack unwinding. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.
CVE-2014-0011 1 Tigervnc 1 Tigervnc 2024-11-21 9.8 Critical
Multiple heap-based buffer overflows in the ZRLE_DECODE function in common/rfb/zrleDecode.h in TigerVNC before 1.3.1, when NDEBUG is enabled, allow remote VNC servers to cause a denial of service (vncviewer crash) and possibly execute arbitrary code via vectors related to screen image rendering.