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Freerdp: [GHSA-23pf-q83q-x45r: Unbounded MonitorIds used as an array index in X11 monitor selection] (CVE-2026-91958)

0
Medium
VulnerabilityCVE-2026-91958gcveosvubuntu-cve-2026-91958cve-2026-91958ubuntu-16-04-ltsubuntu-pro-18-04-ltsubuntu-18-04-ltsubuntu-pro-20-04-ltsubuntu-22-04-ltsubuntu-24-04-ltsubuntu-pro-24-04-ltsubuntu-26-04-lts
Published: 09/16/2026 (09/16/2026, 00:00:00 UTC)
Source: GCVE Database
Product: freerdp

Description

[GHSA-23pf-q83q-x45r: Unbounded MonitorIds used as an array index in X11 monitor selection]

CVSS v3.1

Score 6.6medium

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Affected software

Ubuntu:16.04:LTSmore threats →ghsa
freerdp
pkg:deb/ubuntu/freerdp?arch=source&distro=xenial
Affected versions
=1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1=1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.2=1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.3=1.1.0~git20140921.1.440916e+dfsg1-5ubuntu1.4
Ubuntu:Pro:18.04:LTSmore threats →ghsa
freerdp2
pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-infra/bionic
Affected versions
=2.0.0~git20170725.1.1648deb+dfsg1-1=2.0.0~git20170725.1.1648deb+dfsg1-5=2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu1=2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu2=2.0.0~git20170725.1.1648deb+dfsg1-6=2.0.0~git20170725.1.1648deb+dfsg1-6build1=2.0.0~git20170725.1.1648deb+dfsg1-7=2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1=2.1.1+dfsg1-0ubuntu0.18.04.1=2.2.0+dfsg1-0ubuntu0.18.04.1=2.2.0+dfsg1-0ubuntu0.18.04.2=2.2.0+dfsg1-0ubuntu0.18.04.3=2.2.0+dfsg1-0ubuntu0.18.04.4=2.2.0+dfsg1-0ubuntu0.18.04.4+esm1=2.2.0+dfsg1-0ubuntu0.18.04.4+esm2=2.2.0+dfsg1-0ubuntu0.18.04.4+esm3=2.2.0+dfsg1-0ubuntu0.18.04.4+esm4=2.2.0+dfsg1-0ubuntu0.18.04.4+esm5=2.2.0+dfsg1-0ubuntu0.18.04.4+esm6
Ubuntu:18.04:LTSmore threats →ghsa
freerdp
pkg:deb/ubuntu/freerdp?arch=source&distro=bionic
Affected versions
=1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1=1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.1=1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.18.04.2
Ubuntu:Pro:20.04:LTSmore threats →ghsa
freerdp2
pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-infra/focal
Affected versions
=2.0.0~git20190204.1.2693389a+dfsg1-1=2.0.0~git20190204.1.2693389a+dfsg1-2=2.0.0~git20190204.1.2693389a+dfsg1-2build1=2.0.0~git20190204.1.2693389a+dfsg1-2build2=2.1.1+dfsg1-0ubuntu0.20.04.1=2.2.0+dfsg1-0ubuntu0.20.04.1=2.2.0+dfsg1-0ubuntu0.20.04.2=2.2.0+dfsg1-0ubuntu0.20.04.3=2.2.0+dfsg1-0ubuntu0.20.04.4=2.2.0+dfsg1-0ubuntu0.20.04.5=2.2.0+dfsg1-0ubuntu0.20.04.6=2.6.1+dfsg1-0ubuntu0.20.04.1=2.6.1+dfsg1-0ubuntu0.20.04.2=2.6.1+dfsg1-0ubuntu0.20.04.2+esm1=2.6.1+dfsg1-0ubuntu0.20.04.2+esm2=2.6.1+dfsg1-0ubuntu0.20.04.2+esm3=2.6.1+dfsg1-0ubuntu0.20.04.2+esm4
Ubuntu:22.04:LTSmore threats →ghsa
freerdp2
pkg:deb/ubuntu/freerdp2?arch=source&distro=jammy
Affected versions
=2.3.0+dfsg1-2build1=2.3.0+dfsg1-2ubuntu1=2.3.0+dfsg1-2ubuntu2=2.4.1+dfsg1-1=2.4.1+dfsg1-1ubuntu1=2.4.1+dfsg1-1ubuntu2=2.5.0+dfsg1-1=2.6.0+dfsg1-1=2.6.1+dfsg1-1=2.6.1+dfsg1-3=2.6.1+dfsg1-3ubuntu1=2.6.1+dfsg1-3ubuntu2=2.6.1+dfsg1-3ubuntu2.1=2.6.1+dfsg1-3ubuntu2.2=2.6.1+dfsg1-3ubuntu2.3=2.6.1+dfsg1-3ubuntu2.4=2.6.1+dfsg1-3ubuntu2.5=2.6.1+dfsg1-3ubuntu2.6=2.6.1+dfsg1-3ubuntu2.7=2.6.1+dfsg1-3ubuntu2.8=2.6.1+dfsg1-3ubuntu2.9=2.6.1+dfsg1-3ubuntu2.10=2.6.1+dfsg1-3ubuntu2.11
Ubuntu:24.04:LTSmore threats →ghsa
freerdp3
pkg:deb/ubuntu/freerdp3?arch=source&distro=noble
Affected versions
<3.31.0+dfsg-0ubuntu0.24.04.1=3.4.0+dfsg1-0ubuntu2=3.4.0+dfsg1-0ubuntu3=3.4.0+dfsg1-0ubuntu4=3.5.0+dfsg1-0ubuntu1=3.5.1+dfsg1-0ubuntu1=3.5.1+dfsg1-0ubuntu1.1=3.5.1+dfsg1-0ubuntu1.2=3.5.1+dfsg1-0ubuntu1.4=3.5.1+dfsg1-0ubuntu1.5=3.5.1+dfsg1-0ubuntu1.6=3.30.0+dfsg-0ubuntu0.24.04.1=3.30.0+dfsg-0ubuntu0.24.04.2
Ubuntu:Pro:24.04:LTSmore threats →ghsa
freerdp2
pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-apps/noble
Affected versions
=2.10.0+dfsg1-1.1ubuntu1=2.11.2+dfsg1-1=2.11.2+dfsg1-1build1=2.11.2+dfsg1-1build3=2.11.5+dfsg1-1build1=2.11.5+dfsg1-1build2=2.11.5+dfsg1-1ubuntu0.1~esm1=2.11.5+dfsg1-1ubuntu0.1~esm2=2.11.5+dfsg1-1ubuntu0.1~esm3=2.11.5+dfsg1-1ubuntu0.1~esm4=2.11.5+dfsg1-1ubuntu0.1~esm5=2.11.5+dfsg1-1ubuntu0.1~esm6
Ubuntu:26.04:LTSmore threats →ghsa
freerdp3
pkg:deb/ubuntu/freerdp3?arch=source&distro=resolute
Affected versions
<3.31.0+dfsg-0ubuntu0.26.04.1=3.16.0+dfsg-2=3.18.0+dfsg-1ubuntu1=3.19.0+dfsg-1=3.19.1+dfsg-1=3.20.0+dfsg-1=3.20.2+dfsg-1=3.21.0+dfsg-1=3.22.0+dfsg-1=3.24.1+dfsg-1ubuntu1=3.24.2+dfsg-1ubuntu1=3.24.2+dfsg-1ubuntu1.1=3.30.0+dfsg-0ubuntu0.26.04.1=3.30.0+dfsg-0ubuntu0.26.04.2

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-91958
Osv Schema Version
1.7.0
Ecosystems
["Ubuntu:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:26.04:LTS"]
Cvss Version
3.1

Threat ID: 6ab1e263f7a7c54106454769

Added to database: 09/22/2026, 02:05:23 UTC

Last updated: 09/22/2026, 02:05:23 UTC

Views: 1

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