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Fencer Intel
high 7.5

CVE-2026-96541 json

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

published last mo. modified 2h ago also EUVD-2026-85525

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:49.3-18.el10_3
  • Red Hat Red Hat Enterprise Linux 9.8 Extended Update Support 0:40.0-13.el9_8

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-96541 updated cvss 7.5

gnome-remote-desktop: gnome-remote-desktop: unauthenticated RDP sockets lack a handshake deadline

  • Red Hat Enterprise Linux 8 gnome-remote-desktop Red Hat Enterprise Linux 9 gnome-remote-desktop
    affected: workaround, no fix available
  • Red Hat Enterprise Linux AppStream (v. 10) gnome-remote-desktop 49.3-18.el10_3
    fixed: vendor fix RHSA-2026:98622
  • Red Hat Enterprise Linux AppStream EUS (v.9.8) gnome-remote-desktop 40.0-13.el9_8
    fixed: vendor fix RHSA-2026:99136

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
29d ago

Exploit prediction

0.88% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • gitlab.gnome.org https://gitlab.gnome.org/GNOME/gnome-remote-desktop/-/issues/356 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 9.8 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.