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

Status: published. Published: 2026-08-28. Updated: 2026-11-06.

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.

## Remediation

- workaround: To mitigate this vulnerability, do not open ICO files from untrusted sources with GIMP. (source: CNA: redhat)

## Affected products and versions

- GNOME / GIMP (gimp): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (gimp): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (gimp): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (gimp:2.8/gimp): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (gimp): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.18% as of 2026-11-05; percentile 8.03%

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-125

## Exploit evidence

- exploit: https://gitlab.gnome.org/GNOME/gimp/-/work_items/16585 (ADP: CISA-ADP)

## References

- https://access.redhat.com/security/cve/CVE-2026-82328 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2525612 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16585 (CNA: redhat)

- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16585 (ADP: CISA-ADP; exploit)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-82328; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-82328; retrieved 2026-11-06; source updated Not reported

Revision: 5e774d80e4ca41dd3af6b22ccac1f3624856ee802512a70fd8ef110e1f76297d

Canonical: https://y2.dev/cve/CVE-2026-82328

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