# CVE-2026-118753: FreeImage through 3.18.0 and danoli3 fork before 3.19.25 Heap Buffer Overflow via GIF_PLAYBACK Compositing

Status: published. Published: 2026-10-28. Updated: 2026-11-02.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/danoli3/FreeImage/pull/183
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/danoli3/FreeImage/commit/96f4099f8e307484ba69b4aa14d772b7679a1bfb
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/danoli3/FreeImage/commit/0da5ddb4d311e5222251348cca1aa988478b1034

## Affected products and versions

- danoli3 / FreeImage (danoli3/FreeImage): ≥ 0; < 3.19.25 (affected, semver); 3.19.25 (unaffected, semver). Source: CNA: VulnCheck
- FreeImage / FreeImage: ≥ 0; ≤ 3.18.0 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 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; source: CNA: VulnCheck

- CVSS 3.1: 7.8 (high); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.14% as of 2026-11-02; percentile 3.41%

- SSVC: Not available

- Weaknesses: CWE-787

## Exploit evidence

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

## References

- https://github.com/danoli3/FreeImage/pull/183 (CNA: VulnCheck; issue-tracking, patch)

- https://github.com/danoli3/FreeImage/commit/96f4099f8e307484ba69b4aa14d772b7679a1bfb (CNA: VulnCheck; patch)

- https://github.com/danoli3/FreeImage (CNA: VulnCheck; product)

- https://github.com/danoli3/FreeImage/blob/3.19.24/Source/FreeImage/PluginGIF.cpp#L719-L772 (CNA: VulnCheck; technical-description)

- https://github.com/danoli3/FreeImage/commit/0da5ddb4d311e5222251348cca1aa988478b1034 (CNA: VulnCheck; patch)

- https://github.com/danoli3/FreeImage/releases/tag/3.19.25 (CNA: VulnCheck; release-notes)

- https://github.com/danoli3/FreeImage/pull/244 (CNA: 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-compositing (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-118753; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-118753; retrieved 2026-11-02; source updated Not reported

Revision: e51ca7ab4e959baf22ce1efd62985437a376402740fe804d034b2bb04f0dfb34

Canonical: https://y2.dev/cve/CVE-2026-118753

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