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CVE-2026-66759— Gimp: out-of-bounds read in file-icns plugin causes information disclosure or crash on crafted icns images

Quick assessment

Affected
GNOME GIMP
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.

GNOME GIMP是GNOME基金会的一款图像编辑软件。 GNOME GIMP存在缓冲区错误漏洞，该漏洞源于file-icns插件在ICNS图像处理过程中未验证游标是否超过分配资源大小，导致越界读取，可能造成堆内容信息泄露或崩溃。

CVSS 7.1 · High EPSS 0.30% · P21

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 5

VendorProduct Version RangeStatus
GNOME GIMP 2.99.14< * affected
Red Hat Red Hat Enterprise Linux 6 any unaffected
Red Hat Red Hat Enterprise Linux 7 any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
Red Hat Red Hat Enterprise Linux 9 2:3.0.4-4.el9_8.9< * unaffected
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I. Basic Information for CVE-2026-66759

Vulnerability Information
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Vulnerability Title
Gimp: out-of-bounds read in file-icns plugin causes information disclosure or crash on crafted icns images
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the file-icns plugin in GIMP. When applying a decompressed mask during ICNS image processing, the plugin reads from the mask data buffer without verifying if the cursor exceeds the allocated resource size. If a crafted file contains a truncated mask resource, the icns_decompress function continues reading past the bounds of the buffer. This out-of-bounds read vulnerability results in information disclosure of heap contents, where memory contents are leaked as alpha channel pixel values, or a crash leading to a denial of service if unmapped memory is accessed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
GNOME GIMP 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNOME GIMP是GNOME基金会的一款图像编辑软件。 GNOME GIMP存在缓冲区错误漏洞，该漏洞源于file-icns插件在ICNS图像处理过程中未验证游标是否超过分配资源大小，导致越界读取，可能造成堆内容信息泄露或崩溃。
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
GNOME GIMP 2.99.14 ~ * -
Red Hat Red Hat Enterprise Linux 9 2:3.0.4-4.el9_8.9 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
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

II. Public POCs for CVE-2026-66759

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III. Intelligence Information for CVE-2026-66759

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Vendor Advisories for CVE-2026-66759 (4)

Same Patch Batch · GNOME · 2026-07-27 · 3 CVEs total

CVE-2026-66758 7.8 HIGH Gimp: integer overflow in file-fits plugin causes a heap-based buffer overflow on crafted
CVE-2026-66757 5.5 MEDIUM Gimp: signed integer overflow in file-sgi (sgi-lib) causes the plugin to crash on rle sgi

IV. Related Vulnerabilities

Same product: GIMP
Same vendor: GNOME
Same weakness: CWE-125

V. Comments for CVE-2026-66759

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