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CVE-2026-82328— Gimp: heap out-of-bounds read in ico loader via unvalidated used_clrs palette count

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.

GIMP是GIMP组织开源的一款专业图像编辑软件。 GIMP存在缓冲区错误漏洞，该漏洞源于file-ico插件处理特制ICO图像文件时未正确验证used_clrs参数，导致堆越界读取，可能导致拒绝服务或有限堆内存信息泄露。

CVSS 6.1 · Medium EPSS 0.26% · P17

Affected Version Matrix 5

VendorProduct Version RangeStatus
GNOME GIMP any affected
Red Hat Red Hat Enterprise Linux 6 any unknown
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-2026-82328

Vulnerability Information
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Vulnerability Title
Gimp: heap out-of-bounds read in ico loader via unvalidated used_clrs palette count
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the file-ico plugin in GIMP. When processing a specially crafted ICO image file, the plugin does not properly validate the used_clrs (palette count) parameter. This incorrect validation leads to improper memory bounds checking, resulting in a heap out-of-bounds read. This issue can result in an application crash, leading to a denial of service or a limited information disclosure of heap memory contents.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/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
GIMP 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GIMP是GIMP组织开源的一款专业图像编辑软件。 GIMP存在缓冲区错误漏洞，该漏洞源于file-ico插件处理特制ICO图像文件时未正确验证used_clrs参数，导致堆越界读取，可能导致拒绝服务或有限堆内存信息泄露。
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 - -
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-2026-82328

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III. Intelligence Information for CVE-2026-82328

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Vendor Advisories for CVE-2026-82328 (2)

Other References for CVE-2026-82328 (1)

Same Patch Batch · GNOME · 2026-08-28 · 4 CVEs total

CVE-2026-82330 6.1 MEDIUM Gimp: heap out-of-bounds read in pvr vq (compressed) decoder due to missing bounds check
CVE-2026-82324 6.1 MEDIUM Gimp: heap out-of-bounds reads in iff/ilbm loader from ham row size mismatch and nplanes=0
CVE-2026-82343 6.1 MEDIUM Gimp: heap out-of-bounds read and stack out-of-bounds access in psd loader from channel-co

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-82328

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