Skip to main content

gdk-pixbuf CVE-2026-16768

| EUVDEUVD-2026-48315 MEDIUM
Out-of-bounds Read (CWE-125)
2026-07-23 redhat GHSA-744w-9fjj-p376
5.3
CVSS 3.1 · Vendor: redhat
Share

Severity by source

Vendor (redhat) PRIMARY
5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
vuln.today AI
5.3 MEDIUM

Network vector confirmed for server-side thumbnail pipelines; PR:N because no auth is required to submit an image; C:L reflects partial, indirectly encoded heap disclosure with no integrity or availability impact.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
SUSE
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Red Hat
5.3 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Jul 23, 2026 - 17:19 vuln.today
CVE Published
Jul 23, 2026 - 16:41 cve.org
MEDIUM 5.3

DescriptionCVE.org

A flaw was found in gdk-pixbuf. When parsing a specially crafted ICO file with pixel values that exceed the defined palette range, an out-of-bounds read can occur due to improper bounds checking against the actual palette size. This vulnerability causes heap bytes to be interpreted as valid palette indices and rendered as RGB pixel values in the output image, allowing an attacker to extract heap content via the generated output, such as a thumbnail.

AnalysisAI

Out-of-bounds heap read in gdk-pixbuf's ICO parser exposes heap memory content through rendered image output, affecting Red Hat Enterprise Linux 6 through 10. When processing a crafted ICO file whose pixel indices exceed the defined palette size, the library reads beyond the palette array boundary - heap bytes are treated as palette entries and rendered as RGB pixel values in the output image, enabling an attacker to extract heap content by analyzing the rendered result. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Supply crafted ICO file with oversized pixel indices
Delivery
Submit to gdk-pixbuf image processing pipeline
Exploit
Out-of-bounds read past palette array into heap
Execution
Heap bytes rendered as RGB values in output image
Persist
Attacker retrieves rendered thumbnail
Impact
Decode pixel stream to extract heap content

Vulnerability AssessmentAI

Exploitation The vulnerability is triggered specifically when gdk-pixbuf parses an ICO file that uses palette-based (indexed color) encoding and contains pixel index values exceeding the defined palette array length - this is the precise triggering condition. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 5.3 Medium (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) correctly reflects a remotely reachable, zero-complexity trigger with limited confidentiality impact and no integrity or availability consequence. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker submits a crafted ICO file - with palette-indexed pixel entries whose index values exceed the palette array size - to a web application that uses gdk-pixbuf to generate and return a thumbnail preview. The library reads beyond the palette boundary into heap memory, and those bytes are rendered as RGB pixel values in the returned thumbnail image. …
Remediation Apply the gdk-pixbuf errata update from Red Hat once published via the standard Red Hat subscription channels; monitor https://access.redhat.com/security/cve/CVE-2026-16768 and https://bugzilla.redhat.com/show_bug.cgi?id=2506437 for patch release status, as no exact patched version number is confirmed from available data at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-4631 CRITICAL POC
9.8 Apr 07

Remote code execution in Cockpit's web interface allows unauthenticated attackers to execute arbitrary commands on the h

CVE-2026-4480 CRITICAL POC
9.0 May 26

Remote code execution in Samba's printing subsystem allows remote attackers to inject arbitrary shell commands via craft

CVE-2026-14544 CRITICAL
9.8 Jul 03

Remote code execution and privilege escalation in HPLIP (HP Linux Imaging and Printing) affects the hpcups print filter

CVE-2026-28369 CRITICAL
9.1 Mar 27

HTTP request smuggling in Undertow (the embedded web server underpinning JBoss EAP, Red Hat Data Grid, and Apache Camel

CVE-2026-28368 CRITICAL
9.1 Mar 27

HTTP request smuggling in Red Hat Undertow allows remote unauthenticated attackers to bypass front-end security controls

CVE-2026-33845 CRITICAL
9.1 Apr 30

Out-of-bounds read in the GnuTLS DTLS handshake reassembly logic lets remote unauthenticated attackers trigger an intege

CVE-2026-28367 CRITICAL
9.1 Mar 27

HTTP request smuggling in Undertow allows remote unauthenticated attackers to send `\r\r\r` as a header block terminator

CVE-2026-16526 HIGH
8.8 Jul 30

Local privilege escalation in Performance Co-Pilot (PCP) on Red Hat Enterprise Linux 6 through 10 and OpenShift Containe

CVE-2026-11610 HIGH
8.8 Jul 07

Denial of service in Red Hat / 389 Directory Server (389-ds-base, versions since ~1.3.2/2013) allows an authenticated LD

CVE-2026-14474 HIGH
8.8 Jul 07

Local-to-domain-wide root privilege escalation in SSSD's LDAP sudo provider allows an authenticated LDAP directory user

CVE-2026-52720 HIGH
8.8 Jun 15

Heap buffer overflow in GStreamer's librfb (RFB/VNC client) allows a malicious VNC server to corrupt heap memory on a co

CVE-2026-59851 HIGH
8.8 Jul 21

Privilege escalation via authentication bypass in libssh affects servers that enable GSSAPIKeyExchange, where the gssapi

Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Not-Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Not-Affected
SUSE Linux Enterprise Micro 5.3 Affected

Share

CVE-2026-16768 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy