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xorg-x11-server: ScreenSaverSetAttributes use-after-free

🗓️ 04 Aug 2025 16:35:43Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 6 Views

X.Org X11 server ScreenSaverSetAttributes use-after-free enables local privilege escalation and remote code execution for SSH X forwarding.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ALT Linux		Security fix for the ALT Linux 10 package xorg-server version 2:1.20.14-alt5
14 Dec 202200:00
–altlinux
FreeBSD		xorg-server -- Multiple security issues in X server extensions
14 Dec 202200:00
–freebsd
Tenable Nessus		Amazon Linux 2023 : xorg-x11-server-common, xorg-x11-server-devel, xorg-x11-server-source (ALAS2023-2023-102)
21 Mar 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : xorg-x11-server (ALAS-2023-1982)
7 Mar 202300:00
–nessus
Tenable Nessus		Amazon Linux AMI : xorg-x11-server (ALAS-2023-1689)
23 Feb 202300:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0062: xorg-x11-server (ALINUX3-SA-2023:0062)
14 May 202500:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0063: tigervnc (ALINUX3-SA-2023:0063)
14 May 202500:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0044: xorg-x11-server-Xwayland (ALINUX3-SA-2024:0044)
14 May 202500:00
–nessus
Tenable Nessus		AlmaLinux 9 : xorg-x11-server (ALSA-2023:2248)
14 May 202300:00
–nessus
Tenable Nessus		AlmaLinux 9 : xorg-x11-server-Xwayland (ALSA-2023:2249)
14 May 202300:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux6.10i686tigervnc1.1.0-25.el6_10.13tigervnc-1.1.0-25.el6_10.13.i686.rpm
Red Hat Enterprise Linux6.10s390xtigervnc1.1.0-25.el6_10.13tigervnc-1.1.0-25.el6_10.13.s390x.rpm
Red Hat Enterprise Linux6.10x86_64tigervnc1.1.0-25.el6_10.13tigervnc-1.1.0-25.el6_10.13.x86_64.rpm
Red Hat Enterprise Linux6.10i686tigervnc-debuginfo1.1.0-25.el6_10.13tigervnc-debuginfo-1.1.0-25.el6_10.13.i686.rpm
Red Hat Enterprise Linux6.10s390xtigervnc-debuginfo1.1.0-25.el6_10.13tigervnc-debuginfo-1.1.0-25.el6_10.13.s390x.rpm
Red Hat Enterprise Linux6.10x86_64tigervnc-debuginfo1.1.0-25.el6_10.13tigervnc-debuginfo-1.1.0-25.el6_10.13.x86_64.rpm
Red Hat Enterprise Linux6.10i686tigervnc-server1.1.0-25.el6_10.13tigervnc-server-1.1.0-25.el6_10.13.i686.rpm
Red Hat Enterprise Linux6.10s390xtigervnc-server1.1.0-25.el6_10.13tigervnc-server-1.1.0-25.el6_10.13.s390x.rpm
Red Hat Enterprise Linux6.10x86_64tigervnc-server1.1.0-25.el6_10.13tigervnc-server-1.1.0-25.el6_10.13.x86_64.rpm
Red Hat Enterprise Linux6.10noarchtigervnc-server-applet1.1.0-25.el6_10.13tigervnc-server-applet-1.1.0-25.el6_10.13.noarch.rpm
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12 Jul 2026 01:27Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.18.8
EPSS0.02367
SSVC
CWE-416
screen saver attributesuse after freeprivilege escalationremote code executionssh forwarding
6