X.org libXrender up to 0.9.12 RenderQueryPictFormats heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in X.org libXrender up to 0.9.12 and classified as critical. The affected element is the function RenderQueryPictFormats. Performing a manipulation results in heap-based overflow. This vulnerability is reported as CVE-2026-88807. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in X.org libXrender up to 0.9.12. This affects the function RenderQueryPictFormats. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.

The advisory is shared at gitlab.freedesktop.org. This vulnerability is uniquely identified as CVE-2026-88807 since 09/10/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 350163 (openSUSE 16 Security Update : libXrender (openSUSE-SU-2026:21909-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.9.13 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (350163) and CERT Bund (WID-SEC-2026-4187). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Red Hat Enterprise Linux
  • RESF Rocky Linux
  • Oracle Linux
  • Apache Camel

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / 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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Nessus ID: 350163
Nessus Name: openSUSE 16 Security Update : libXrender (openSUSE-SU-2026:21909-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: libXrender 0.9.13

Timelineinfo

09/10/2026 CVE reserved
09/21/2026 +11 days Advisory disclosed
09/21/2026 +0 days VulDB entry created
10/31/2026 +40 days VulDB entry last update

Sourcesinfo

Vendor: x.org

Advisory: gitlab.freedesktop.org
Status: Confirmed

CNA: suse
CVE: CVE-2026-88807 (🔒)

GCVE (CVE): GCVE-0-2026-88807
GCVE (VulDB): GCVE-100-408117
CERT Bund: WID-SEC-2026-4187 - Red Hat Enterprise Linux (libXi, libXrender, ansible-collection-redhat-leapp) und Red Hat Build of Apache Camel for Quarkus: Mehrere Schwachstellen

Entryinfo

Created: 09/21/2026 16:10
Updated: 10/31/2026 03:00
Changes: 09/21/2026 16:10 (66), 09/25/2026 18:25 (2), 10/29/2026 12:56 (7), 10/31/2026 03:00 (1)
Complete: 🔍
Cache ID: 216::103

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

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