CVE-2026-118753

FreeImage through 3.18.0 and danoli3 fork before 3.19.25 Heap Buffer Overflow via GIF_PLAYBACK Compositing

publishedCWE-787

FreeImage through 3.18.0 and the danoli3 FreeImage fork before 3.19.25 contain a heap buffer overflow vulnerability in PluginGIF.cpp that allows attackers to write past the canvas allocation via unclipped GIF frame rectangles. Attackers can craft a GIF whose frame left plus width exceeds the logical screen width, causing GifPlaybackCompositeFrame() and GifPlaybackFillRect() to corrupt heap memory when loaded with GIF_PLAYBACK.

Technical severity8.5 highCVSS 4.0 · CNA: VulnCheck

Published2026-10-28Source updated 2026-11-02

Collected2026-11-022 attributed sources

Fixes and workarounds

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: CNA: VulnCheck

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: CNA: VulnCheck

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: CNA: VulnCheck

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
FreeImage danoli3 `danoli3/FreeImage` github	≥ 0; < 3.19.25 (affected, semver) 3.19.25 (unaffected, semver) Other versions: unaffected	CNA: VulnCheck
FreeImage FreeImage	≥ 0; ≤ 3.18.0 (affected, semver) Other versions: unaffected	CNA: VulnCheck

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
4.0 / 8.5 high	`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`	CNA: VulnCheck
3.1 / 7.8 high	`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`	CNA: VulnCheck

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://github.com/danoli3/FreeImage/pull/183CNA: VulnCheck · issue-tracking, patch
https://github.com/danoli3/FreeImage/commit/96f4099f8e307484ba69b4aa14d772b7679a1bfbCNA: VulnCheck · patch
https://github.com/danoli3/FreeImageCNA: VulnCheck · product
https://github.com/danoli3/FreeImage/blob/3.19.24/Source/FreeImage/PluginGIF.cpp#L719-L772CNA: VulnCheck · technical-description
https://github.com/danoli3/FreeImage/commit/0da5ddb4d311e5222251348cca1aa988478b1034CNA: VulnCheck · patch
https://github.com/danoli3/FreeImage/releases/tag/3.19.25CNA: VulnCheck · release-notes
https://github.com/danoli3/FreeImage/pull/244CNA: VulnCheck · release-notes
https://sourceforge.net/projects/freeimage/CNA: VulnCheck · product
https://www.vulncheck.com/advisories/freeimage-danoli3-fork-before-3.19.25-heap-buffer-overflow-via-gif-playback-compositingCNA: VulnCheck · third-party-advisory

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