x.org libX11 up to 1.8.13 XIM Attribute Parser out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.80-

Summaryinfo

A vulnerability was found in x.org libX11 up to 1.8.13 and classified as problematic. This impacts an unknown function of the component XIM Attribute Parser. Such manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2026-94283. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in x.org libX11 up to 1.8.13. It has been rated as problematic. Affected by this issue is an unknown code of the component XIM Attribute Parser. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability. CVE summarizes:

An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.

The advisory is available at gitlab.freedesktop.org. This vulnerability is handled as CVE-2026-94283 since 09/21/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

Upgrading to version 1.8.14 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-3606). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Open Source X.Org X11

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (suse): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: libX11 1.8.14

Timelineinfo

09/21/2026 CVE reserved
09/28/2026 +7 days Advisory disclosed
09/28/2026 +0 days VulDB entry created
09/28/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: x.org

Advisory: gitlab.freedesktop.org
Status: Confirmed

CVE: CVE-2026-94283 (🔒)
GCVE (CVE): GCVE-0-2026-94283
GCVE (VulDB): GCVE-100-411002
CERT Bund: WID-SEC-2026-3606 - X.Org X11: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 09/28/2026 10:57
Updated: 09/28/2026 17:55
Changes: 09/28/2026 10:57 (63), 09/28/2026 17:55 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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