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CVE-2026-88806

🗓️ 21 Sep 2026 13:42:12Reported by Debian Security Bug TrackerType 
debiancve
 debiancve
🔗 security-tracker.debian.org👁 7 Views

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.

Related
Packages
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-88806
21 Sep 202613:42
cve
cvelist
Cvelist
CVE-2026-88806 libX11 XkbGetMap Reply Heap-based Buffer Overflow
21 Sep 202613:42
cvelist
euvd
EUVD
EUVD-2026-83914
21 Sep 202613:42
euvd
mscve
Microsoft CVE
libX11 XkbGetMap Reply Heap-based Buffer Overflow
22 Sep 202608:01
mscve
nvd
NVD
CVE-2026-88806
21 Sep 202614:17
nvd
opensuse
OPENSUSE Linux
libX11-6-1.8.13-2.1 on GA media (moderate)
23 Sep 202600:00
opensuse
osv
OSV
AZL-103388 CVE-2026-88806 affecting package libX11 1.8.7-1
21 Sep 202614:17
osv
osv
OSV
DEBIAN-CVE-2026-88806
21 Sep 202614:17
osv
osv
OSV
ECHO-4EE4-286E-3447
22 Sep 202619:08
osv
osv
OSV
OPENSUSE-SU-2026:11833-1 libX11-6-1.8.13-2.1 on GA media
21 Sep 202600:00
osv
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Debian12alllibx112:1.8.4-2+deb12u2libx11_2:1.8.4-2+deb12u2_all.deb
Debian13alllibx112:1.8.12-1libx11_2:1.8.12-1_all.deb
Debian14alllibx112:1.8.13-1libx11_2:1.8.13-1_all.deb
Debian999alllibx112:1.8.13-1libx11_2:1.8.13-1_all.deb

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21 Sep 2026 13:42Current
6Medium risk
Vulners AI Score6
CVSS 3.17.5
EPSS0.00336
SSVC
7