CVE-2026-82328 Gimp: heap out-of-bounds read in ico loader via unvalidated used_clrs palette count
A heap out-of-bounds read in GIMP's ICO loader allows attackers to cause crashes or disclose heap memory via crafted images.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-82328?
CVE-2026-82328 is a medium-severity memory corruption vulnerability in Gimp Gimp, published on 28 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2026-82328?
It affects 2 products.
Products include Gimp Gimp, Redhat Enterprise Linux.
How do I fix CVE-2026-82328?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-82328 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82328 exists.
Other vulnerabilities in Gimp Gimp
Sources
Also known as CLSA-2026-1788427757, CLSA-2026-1788429305, DEBIAN-CVE-2026-82328, GHSA-q72j-h9qm-329m, UBUNTU-CVE-2026-82328.