CVE-2026-59835

A exposure of resource to wrong sphere vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.2, FortiSandbox 4.4.3 through 4.4.8 may allow an unauthenticated attacker to access the VNC server of VMs performing scanning via network requests...

RLSA-2026:36749 Important: gstreamer1-plugins-bad-free security update

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-bad-free package contains a collection of plug-ins for GStreamer. Security Fixes: gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tilelistobu parser byte/bit...

gstreamer1-plugins-bad-free security update

An update is available for gstreamer1-plugins-bad-free. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list GStreamer is a streaming media framework based on graphs ...

RLSA-2026:37130 Important: gstreamer1-plugins-bad-free security update

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-bad-free package contains a collection of plug-ins for GStreamer. Security Fixes: gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle i...

Important: Red Hat Security Advisory: gstreamer1-plugins-bad-free security update

An update for gstreamer1-plugins-bad-free is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

AlmaLinux 10 : gstreamer1-plugins-bad-free (ALSA-2026:36749)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:36749 advisory. gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tilelistobu parser byte/bit confusion CVE-2026-52718 gstreamer1-plugins-bad-free:...

ALSA-2026:37130 Important: gstreamer1-plugins-bad-free security update

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-bad-free package contains a collection of plug-ins for GStreamer. Security Fixes: gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle i...

gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb

A heap buffer overflow vulnerability was found in GStreamer's librfb RFB/VNC client. The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a...

PT-2026-61003

Name of the Vulnerable Software and Affected Versions xrdp versions prior to 0.10.6.1 Description A missing bounds check in the server occurs when operating in vnc-any mode during the handling of RFB protocol color map messages from a VNC server. Because incoming color indices are not properly...

Out-of-bounds Write

Overview Affected versions of this package are vulnerable to Out-of-bounds Write in the rfbsrc process when connecting to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates. An attacker can cause a process crash or potentially corrupt memory by...

PT-2026-61004

Name of the Vulnerable Software and Affected Versions xrdp versions prior to 0.10.6.1 Description An integer overflow occurs when processing screen update messages in the vnc-any connection mode. A remote VNC server can send crafted image dimensions that cause an integer overflow during memory...

PT-2026-61024

Name of the Vulnerable Software and Affected Versions xrdp versions prior to 0.10.6.1 Description An issue exists when an authenticated user session is initialized using the Xvnc backend over UNIX domain sockets, as the Xvnc process is launched with insufficient authentication mechanisms. A local...

ALSA-2026:36834 Important: gstreamer1-plugins-bad-free security update

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-bad-free package contains a collection of plug-ins for GStreamer. Security Fixes: gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tilelistobu parser byte/bit...

CVE-2026-44040

UltraVNC through 1.8.2.2 uses a cryptographically weak pseudo-random number generator to produce VNC authentication challenge bytes. In rfb/vncauth.c:119-129, the vncRandomBytes function seeds libc rand with time0 + getpid + rand and generates a 16-byte challenge. The combined seed space is...

CVE-2026-7839

UltraVNC repeater through 1.8.2.2 initializes the HTTP administration server with a hardcoded default password. In repeater/webgui/settings.c:197, when settings2.txt is absent on first run the repeater writes the literal string "adminadmi2" as the admin password via strcpyssavedpassword, 64,...

CVE-2026-7838 UltraVNC viewer heap buffer overflow via integer overflow in RFB connection-failure reason length

UltraVNC viewer through 1.8.2.2 contains an integer overflow leading to a heap buffer overflow in the RFB protocol failure-response parsing path. In vncviewer/ClientConnection.cpp, the 4-byte network-supplied reasonLen field type CARD32 is passed as reasonLen+1 to CheckBufferSize. Because both...

CVE-2026-7838

UltraVNC viewer up to 1.8.2.2 is affected by an integer overflow leading to a heap buffer overflow in the RFB failure-response parsing path. In vncviewer/ClientConnection.cpp, the 4-byte reasonLen field is used as reasonLen+1 in CheckBufferSize(); with unsigned 32-bit operands, reasonLen 0xFFFFFF...

CVE-2026-44040

UltraVNC through 1.8.2.2 uses a cryptographically weak pseudo-random number generator to produce VNC authentication challenge bytes. In rfb/vncauth.c:119-129, the vncRandomBytes function seeds libc rand with time0 + getpid + rand and generates a 16-byte challenge. The combined seed space is...

CVE-2026-44040

UltraVNC

PT-2026-54488

Name of the Vulnerable Software and Affected Versions UltraVNC viewer versions prior to 1.8.2.3 Description An integer overflow exists in the RFB protocol failure-response parsing path within the vncviewer/ClientConnection.cpp file. The issue occurs when the 4-byte network-supplied reasonLen fiel...