CVE-2026-96545: Gimp: gimp: out-of-bounds heap read in the 4bpp tim image loader

Severity: medium (CVSS 4.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-23 · updated 2026-09-24
Weakness: CWE-125

Description

An out-of-bounds heap read flaw was found in GIMP's TIM image loader. When a user opens a crafted 4bpp TIM image that causes promotion to an RGBA layer, the file-tim plug-in allocates an undersized row buffer but processes it using the larger RGBA row size. This can copy adjacent heap contents into the decoded image and may crash the plug-in.

Affected products

Red Hat Enterprise Linux 10: all versions
Red Hat Enterprise Linux 7: all versions
Red Hat Enterprise Linux 8: all versions
Red Hat Enterprise Linux 9: all versions

References

https://access.redhat.com/security/cve/CVE-2026-96545
https://bugzilla.redhat.com/show_bug.cgi?id=2539597
https://gitlab.gnome.org/GNOME/gimp/-/work_items/16791
https://gitlab.gnome.org/GNOME/gimp/-/work_items/16791

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