CVE-2026-88812

highpriority · track · 0DEUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

— EPSS

CVSS 7.8 · high

Is it mine?

11 products

Check your exposure

Who says so?

2 sources

cert_bund · zdi

A double free in XKB SetGeometryin X.Org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by attached clients to cause a crash or potentially code in the x server context.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · meissner@suse.deexploitability 1.8 · impact 5.9

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-415USprimary

affected products (11)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
OpenBSD OpenBSD 7.8all versionscert_bundDEcpe:/a:openbsd:openbsd:7.8
OpenBSD OpenBSD 7.9all versionscert_bundDEcpe:/a:openbsd:openbsd:7.9
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Open Source X.Org X11< 21.1.25cert_bundDE
Open Source Xwayland< 24.1.14cert_bundDE

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3787X.Org X11 und Xwayland: Mehrere SchwachstellenDeutsch2026-10-06csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in X.Org X11 und Xwayland ausnutzen, um beliebigen Programmcode auszuführen und um einen Denial of Service Zustand herbeizuführen.
ZDI-26-759ZDI advisory ZDI-26-7592026-10-15vendor · zdiUS

sources

Which sources assert this record, and when.

cert_bund zdi NVD CVE.org MITRE

published 2026-10-27modified 2026-10-27

related (1,208)

Related entries.

ID	severity	EPSS	exploitable	published
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A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgr…
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Internet Explorer Memory Corruption Vulnerability
CVE-2020-9859US	high7.8OT critical	0.83% (57th)	KEV	2020-06-05
A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemental Update, tvOS 13.4.6…

+1203 more

references (1) nvd

External citations — patches, advisories, analysis.

https://gitlab.freedesktop.org/xorg/xserver/-/commit/0d1b1b0bad86c9ea2a3b7ca5a70e681dc69f1ecc

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