x.org libX11 up to 1.8.13 Byte-Oriented Codeset Parser out-of-bounds

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in x.org libX11 up to 1.8.13. It has been rated as critical. Affected by this issue is some unknown functionality of the component Byte-Oriented Codeset Parser. The manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2026-94285. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in x.org libX11 up to 1.8.13. This issue affects an unknown function of the component Byte-Oriented Codeset 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 confidentiality, integrity, and availability. The summary by CVE is:

An out-of-bounds read in libX11's byte-oriented codeset parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.

The advisory is shared at gitlab.freedesktop.org. The identification of this vulnerability is CVE-2026-94285 since 09/21/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 350909 (Linux Distros Unpatched Vulnerability : CVE-2026-94285), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.8.14 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (350909) and CERT Bund (WID-SEC-2026-3606). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • SUSE Linux
  • SUSE openSUSE
  • 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: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.1
CNA Vector (suse): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 350909
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-94285

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
10/05/2026 +7 days VulDB entry last update

Sourcesinfo

Vendor: x.org

Advisory: gitlab.freedesktop.org
Status: Confirmed

CVE: CVE-2026-94285 (🔒)
GCVE (CVE): GCVE-0-2026-94285
GCVE (VulDB): GCVE-100-411005
CERT Bund: WID-SEC-2026-3606 - X.Org X11: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 09/28/2026 11:10
Updated: 10/05/2026 04:48
Changes: 09/28/2026 11:10 (63), 09/28/2026 17:55 (7), 09/29/2026 03:18 (2), 10/05/2026 04:48 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!