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Important: Red Hat Security Advisory: xorg-x11-server security update

🗓️ 13 Jul 2026 06:16:22Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 7 Views

Red Hat security update for xorg x11 server fixes a font atlas heap overflow (CVE-2026-55999).

Related
Refs
ReporterTitlePublishedViews
Family
FreeBSD
xwayland -- Multiple vulnerabilities
7 Jul 202600:00
freebsd
FreeBSD
xorg-server -- Multiple vulnerabilities
7 Jul 202600:00
freebsd
ATTACKERKB
CVE-2026-55999
8 Jul 202608:07
attackerkb
AlpineLinux
CVE-2026-55999
8 Jul 202608:07
alpinelinux
Circl
CVE-2026-55999
8 Jul 202610:17
circl
CVE
CVE-2026-55999
8 Jul 202608:07
cve
Cvelist
CVE-2026-55999 xorg-server / xwayland glamor font atlas Heap Buffer Overflow
8 Jul 202608:07
cvelist
Debian CVE
CVE-2026-55999
8 Jul 202608:07
debiancve
EUVD
EUVD-2026-42188
8 Jul 202608:07
euvd
Fedora
[SECURITY] Fedora 44 Update: xorg-x11-server-Xwayland-24.1.13-1.fc44
10 Jul 202600:54
fedora
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13 Jul 2026 09:29Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.17.8 - 8.5
EPSS0.00212
SSVC
7