CVE-2026-39959
Published:April 09, 2026
Updated:May 16, 2026
Tmds.DBus provides .NET libraries for working with D-Bus from .NET. Tmds.DBus and Tmds.DBus.Protocol are vulnerable to malicious D-Bus peers. A peer on the same bus can spoof signals by impersonating the owner of a well-known name, exhaust system resources or cause file descriptor spillover by sending messages with an excessive number of Unix file descriptors, and crash the application by sending malformed message bodies that cause unhandled exceptions on the SynchronizationContext. This vulnerability is fixed in Tmds.DBus 0.92.0 and Tmds.DBus.Protocol 0.92.0 and 0.21.3.
Affected Packages
tmds.dbus.protocol (NUGET):
Affected version(s) >=0.12.0 <0.21.3Fix Suggestion:
Update to version 0.21.3tmds.dbus.protocol (NUGET):
Affected version(s) >=0.22.0 <0.92.0Fix Suggestion:
Update to version 0.92.0tmds.dbus (NUGET):
Affected version(s) >=0.1.0 <0.92.0Fix Suggestion:
Update to version 0.92.0tmds.dbus.protocol (NUGET):
Affected version(s) >=0.12.0 <0.21.3Fix Suggestion:
Update to version 0.21.3tmds.dbus (NUGET):
Affected version(s) >=0.1.0 <0.92.0Fix Suggestion:
Update to version 0.92.0tmds.dbus.protocol (NUGET):
Affected version(s) >=0.22.0 <0.92.0Fix Suggestion:
Update to version 0.92.0Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.1
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.01