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CVE-2026-96541

Gnome-remote-desktop: gnome-remote-desktop: unauthenticated rdp sockets lack a handshake deadline

7.5 High

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.88%Up 0.1 points since Sep 24, 2026
90%50%10%1%

What each source reports

CVE List Score used 7.5

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.

Record
CVE-2026-96541
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-400
Updated
2026-11-06
EUVDEUVD-2026-85525 7.5

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.

Record
EUVD-2026-85525
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-06
GitHub AdvisoriesGHSA-gv4j-r8qw-8qpc 7.5

A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker...

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.

Record
GHSA-gv4j-r8qw-8qpc
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-400
Updated
2026-11-02
NVD 7.5

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.

Record
CVE-2026-96541
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-400
Updated
2026-11-06
OSVDEBIAN-CVE-2026-96541 7.5

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.

Record
DEBIAN-CVE-2026-96541
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-04
OSVUBUNTU-CVE-2026-96541 7.5

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.

Record
UBUNTU-CVE-2026-96541
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gnome-remote-desktop
Debian:14
All versions, plus listed versions
48.1-448.2-149.0-149.1-149.1-2
Show 11 moreShow less
49.2-149.2-249.2-349.2-450.1-150.1-250.1-350.1-550.2-150~beta-151.0-1
None known
gnome-remote-desktop
Ubuntu:20.04:LTS
All versions, plus listed versions
0.1.7-1
None known
gnome-remote-desktop
Ubuntu:22.04:LTS
All versions, plus listed versions
40.2-141.0-141.1-341.2-142~beta-1
Show 11 moreShow less
42~rc-142.0-142.0-242.0-4ubuntu142.1.1-0ubuntu142.2-0ubuntu142.3-0ubuntu142.4-0ubuntu142.7-0ubuntu142.9-0ubuntu0.22.04.142.9-0ubuntu0.22.04.2
None known
gnome-remote-desktop
Ubuntu:24.04:LTS
All versions, plus listed versions
45.0-145.1-145.1-1build146~rc-0ubuntu246.0-2
Show 5 moreShow less
46.1-146.2-1~ubuntu24.04.246.3-0ubuntu146.3-0ubuntu1.146.3-0ubuntu1.2
None known
gnome-remote-desktop
Ubuntu:26.10
All versions, plus listed versions
50.0-0ubuntu250.1-350.1-551~alpha-0ubuntu151~alpha-0ubuntu251.0-0ubuntu1
None known
gnome-remote-desktop
Ubuntu:26.04:LTS
All versions, plus listed versions
49.0-0ubuntu149.1-149.1-249.2-149.2-2
Show 6 moreShow less
49.2-2ubuntu150~beta-150~rc-0ubuntu150.0-0ubuntu150.0-0ubuntu250.2-0ubuntu0.1
None known

History

History
RecordedChangedSources
factsCVE List, EUVD
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-96541 is a high vulnerability (CVSS 7.5) in Red Hat Enterprise Linux 10, published September 23, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.88%, the 59th percentile. No source names a fixed version.

References

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