Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
User must locally open a crafted file (AV:L/UI:R); impact is crash-only with no C or I effect confirmed by description.
AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
Lifecycle Timeline
2DescriptionCVE.org
A flaw was found in GIMP's file-png plugin. A remote attacker can exploit this by crafting a malicious Animated Portable Network Graphics (APNG) image containing an oversized tRNS chunk. This can lead to a stack-based buffer overflow (CWE-121), causing the file-png plugin to crash and resulting in a Denial of Service (DoS) for the user.
AnalysisAI
Stack-based buffer overflow in GIMP's file-png plugin on Red Hat Enterprise Linux 6 through 9 causes the application to crash when a user opens a crafted Animated PNG (APNG) image containing an oversized tRNS chunk, resulting in a Denial of Service limited to the affected user session. Exploitation requires local file access and active user interaction - a remote attacker would rely on social engineering (phishing, malicious download) to deliver the file. No active exploitation has been confirmed by CISA KEV, no public exploit code is identified at time of analysis, and EPSS data is unavailable in source intelligence.
Technical ContextAI
The vulnerability resides in GIMP's file-png plugin, responsible for parsing PNG and APNG (Animated Portable Network Graphics) files. The tRNS chunk in PNG/APNG format encodes transparency data; the plugin copies incoming tRNS chunk data into a fixed-size stack buffer without first validating the chunk's declared or actual length. An oversized tRNS chunk overflows this buffer, constituting a stack-based buffer overflow (CWE-121, a subtype of the reported CWE-120 - 'Buffer Copy Without Checking Size of Input'). Both classifications are consistent; CWE-121 is the more precise child class. The CVSS vector AV:L/UI:R correctly models this as a local exploitation scenario requiring the user to open a crafted file. CPE data identifies the affected deployment surface as Red Hat Enterprise Linux 6, 7, 8, and 9 (cpe:2.3:a:red_hat:red_hat_enterprise_linux_6 through _9), scoping impact to GIMP packages shipped with those distributions.
RemediationAI
Monitor the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-6694 and the bugzilla tracker at https://bugzilla.redhat.com/show_bug.cgi?id=2459779 for errata publication and patched GIMP package versions. No exact patched version number is confirmed in available source intelligence - a specific fix version should not be assumed until Red Hat publishes a formal errata notice. Once an errata is available, apply the updated GIMP package via 'dnf update gimp' (RHEL 8/9) or 'yum update gimp' (RHEL 6/7). As an interim compensating control, restrict user exposure to untrusted APNG files through email gateway filtering or endpoint policies; this eliminates the primary delivery vector without impacting other GIMP functionality. Disabling APNG file association with GIMP is a more aggressive option that removes the attack surface entirely but prevents users from opening animated PNGs in GIMP - evaluate workflow impact before deploying.
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View allSame technique Buffer Overflow
View allVendor StatusVendor
SUSE
Severity: Important| Product | Status |
|---|---|
| SUSE Linux Enterprise Desktop 15 SP7 | Not-Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | Not-Affected |
| SUSE Linux Enterprise Server 15 SP7 | Not-Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | Not-Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | Not-Affected |
| SUSE Linux Enterprise Server 15 SP4 | Not-Affected |
| SUSE Linux Enterprise Server 15 SP5 | Not-Affected |
| SUSE Linux Enterprise Server 15 SP6 | Not-Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | Not-Affected |
| SUSE Linux Enterprise Desktop 15 SP4 | Not-Affected |
| SUSE Linux Enterprise Desktop 15 SP5 | Not-Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | Not-Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP4 | Not-Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | Not-Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | Not-Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | Not-Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | Not-Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP4 | Not-Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP5 | Not-Affected |
| SUSE Linux Enterprise Workstation Extension 15 SP6 | Not-Affected |
| openSUSE Leap 15.4 | Not-Affected |
| openSUSE Leap 15.5 | Not-Affected |
| openSUSE Leap 15.6 | Not-Affected |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-52150
GHSA-qv8f-fvhh-gfqp