Devolutions Remote Desktop Manager 2026.1.x < 2026.1.25.0 / 2026.2.x < 2026.2.18.0 Insufficient Data Authenticity Verification (CVE-2026-78417)

The version of Devolutions Remote Desktop Manager installed on the remote host is 2026.1.x prior to 2026.1.25.0 or 2026.2.x prior to 2026.2.18.0. It is, therefore, affected by a vulnerability: - Insufficient verification of data authenticity in the IronVNC client allows an on-path attacker to...

Security update for LibVNCServer

This update for LibVNCServer fixes the following issue: CVE-2026-50538: a malicious or man-in-the-middle VNC server can force a connecting libvncclient to write attacker- controlled data past the end of its framebuffer bsc1276218. Patch Instructions: To install this SUSE update use the SUSE...

CVE-2026-78417

Insufficient verification of data authenticity in the IronVNC client in Devolutions Remote Desktop Manager 2026.2.17.0 and earlier, 2026.1.24.0 and earlier, allows an on-path attacker to intercept and tamper with VNC sessions via automatic acceptance of the server's RSA key during RSA-AES...

EUVD-2026-65063

Insufficient verification of data authenticity in the IronVNC client in Devolutions Remote Desktop Manager 2026.2.17.0 and earlier, 2026.1.24.0 and earlier, allows an on-path attacker to intercept and tamper with VNC sessions via automatic acceptance of the server's RSA key during RSA-AES...

Astra Linux – Vulnerability in libvncserver

A divide by zero issue was detected in libvncserver-0.9.12. A malicious client could exploit this flaw to send a specially crafted message. When this message is processed by the VNC server, it will cause a floating-point exception, resulting in a denial of service...

CVE-2026-50538

LibVNCClient is a library for easy implementation of a VNC client. In versions 0.9.12 through 0.9.15, a malicious or man-in-the-middle VNC server can force a connecting libvncclient to write attacker-controlled data past the end of its framebuffer. This is an out-of-bounds heap write with...

CVE-2026-50538 libvncclient Tight decoder has an attacker-controlled heap out-of-bounds write

LibVNCClient is a library for easy implementation of a VNC client. In versions 0.9.12 through 0.9.15, a malicious or man-in-the-middle VNC server can force a connecting libvncclient to write attacker-controlled data past the end of its framebuffer. This is an out-of-bounds heap write with...

CVE-2026-50538 libvncclient Tight decoder has an attacker-controlled heap out-of-bounds write

LibVNCClient is a library for easy implementation of a VNC client. In versions 0.9.12 through 0.9.15, a malicious or man-in-the-middle VNC server can force a connecting libvncclient to write attacker-controlled data past the end of its framebuffer. This is an out-of-bounds heap write with...

CVE-2026-50538

LibVNCClient (part of the LibVNCServer project) versions 0.9.12 through 0.9.15 contain an out-of-bounds heap write in the Tight decoder . A malicious or man-in-the-middle VNC server can trigger this by sending a single crafted FramebufferUpdate message, writing attacker-controlled data past the e...

gstreamer: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit...

gstreamer: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit...

CVE-2026-61574 authentik RAC: access any endpoint via an unrelated application

authentik is an open-source identity provider. Prior to 2026.2.6 and 2026.5.5, the Remote Access Control endpoint list returns every configured endpoint to any authenticated user regardless of which applications the user may access, and the response includes connection settings that can contain...

gstreamer1-plugins-bad-free security update

1.26.7-2.7 - Fix ADPCM decoder input validation CVE-2026-19387 Resolves: RHEL-235500 1.26.7-2.5 - Fix rfbsrc hextile and color read handling for non-32bpp pixel formats CVE-2026-59691 Resolves: RHEL-193550 1.26.7-2.4 - Fix bytes/bits confusion in AV1 tile data size parsing CVE-2026-52718 Resolves...

gstreamer: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit...

Oracle Linux 9 : frr10 (ELSA-2026-49607)

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-49607 advisory. - Fix CVE-2026-37460: improve packet parsing for EVPN and ENCAP/VNC Tenable has extracted the preceding description block directly from the Oracle Linux securi...

GStreamer librfb: rfb_decoder_fill_rectangle() wrong write granularity causes heap out-of-bounds write

GStreamer librfb: rfbdecoderfillrectangle wrong write granularity causes heap out-of-bounds write Vulnerability Overview In rfbsrc the VNC/RFB client element of GStreamer gst-plugins-bad, rfbdecoderfillrectangle fills rectangles by writing pixels at guint32 4-byte granularity regardless of the...

CVE-2026-65313

A provisioning script used when installing HIPASE-250 formerly 250 SCALA engineering workstations sets a fixed, hard-coded x11vnc password. Because the same credential is applied to every workstation provisioned this way, an attacker with adjacent-network access who knows the password can gain VN...

gstreamer: gstreamer: rfbsrc/librfb Hextile heap out-of-bounds write with 16bpp framebuffer

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit...

CVE-2026-43665

This issue was addressed with additional entitlement checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A local attacker may be able to determine the legacy VNC password configured for Screen Sharing...

CVE-2026-43665

This issue was addressed with additional entitlement checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A local attacker may be able to determine the legacy VNC password configured for Screen Sharing...