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CVE-2026-6694— Gimp: gimp file-png plugin: denial of service via oversized apng trns chunk

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 6
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GIMP GIMP是GIMP组织开源的一款图像编辑和处理软件。 GIMP存在缓冲区错误漏洞，该漏洞源于file-png插件对包含超大tRNS块的恶意APNG图像处理不当，可能导致栈缓冲区溢出，使file-png插件崩溃并造成拒绝服务。

CVSS 5.5 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 4

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 6 any affected
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-6694

Vulnerability Information
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Vulnerability Title
Gimp: gimp file-png plugin: denial of service via oversized apng trns chunk
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
GIMP 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GIMP GIMP是GIMP组织开源的一款图像编辑和处理软件。 GIMP存在缓冲区错误漏洞，该漏洞源于file-png插件对包含超大tRNS块的恶意APNG图像处理不当，可能导致栈缓冲区溢出，使file-png插件崩溃并造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-6694

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III. Intelligence Information for CVE-2026-6694

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Vendor Advisories for CVE-2026-6694 (2)

Same Patch Batch · Red Hat · 2026-08-03 · 6 CVEs total

CVE-2026-68742 5.5 MEDIUM Sssd: sssd: nss responder out-of-bounds read via unchecked addrlen in gethostbyaddr
CVE-2026-6695 5.5 MEDIUM Gimp: gimp: remote code execution via crafted paa file
CVE-2026-18651 5.4 MEDIUM 389-ds-base: 389-ds-base: sasl plain bind installs connection credentials before account-l
CVE-2026-18477 4.4 MEDIUM Tar: tar: toctou in incremental dumpdir 'x' rename handling allows restore path escape
CVE-2026-18508 4.4 MEDIUM Tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling ar

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 6
Same vendor: Red Hat
Same weakness: CWE-120

V. Comments for CVE-2026-6694

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