CVE-2026-96541
Gnome-remote-desktop: gnome-remote-desktop: unauthenticated rdp sockets lack a handshake deadline
A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker can open RDP connections without completing the handshake and retain the connection-throttling slots indefinitely because no pre-authentication handshake deadline is enforced. By exhausting the global connection limit, an attacker can prevent new RDP clients from connecting until a holding socket is closed.
Fixes and workarounds
Workaround
Disable the RDP listener when it is not required, or restrict access to the RDP port to trusted networks or hosts at the network boundary. No application-level mitigation that preserves unrestricted RDP access is known.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Red Hat Enterprise Linux 10 Red Hat gnome-remote-desktop
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat gnome-remote-desktop
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat gnome-remote-desktop
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA: redhat |
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD: [email protected] |
Exploit evidence
- https://gitlab.gnome.org/GNOME/gnome-remote-desktop/-/issues/356
exploit · ADP: CISA-ADP
References
- https://access.redhat.com/security/cve/CVE-2026-96541CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2539385CNA: redhat · issue-tracking, x_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/gnome-remote-desktop/-/issues/356CNA: redhat
- https://gitlab.gnome.org/GNOME/gnome-remote-desktop/-/issues/356ADP: CISA-ADP · exploit
- https://access.redhat.com/security/cve/CVE-2026-96541[email protected]
- https://bugzilla.redhat.com/show_bug.cgi?id=2539385[email protected]
- https://gitlab.gnome.org/GNOME/gnome-remote-desktop/-/issues/356[email protected]
- https://gitlab.gnome.org/GNOME/gnome-remote-desktop/-/issues/356134c704f-9b21-4f2e-91b3-4a467353bcc0
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