What’s Vulnerable › Vulnerabilities

CVE-2026-118753: FreeImage (danoli3 fork) before 3.19.25 Heap Buffer Overflow via GIF_PLAYBACK Compositing

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-28 · updated 2026-10-28
• Weakness: CWE-787

Description

FreeImage (danoli3 fork) before 3.19.25 contains 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.

Affected products

• danoli3 FreeImage: before 3.19.25 — fixed in 3.19.25
• FreeImage: through 3.18.0

How to fix

Upgrade to a fixed version: danoli3 FreeImage 3.19.25. Check the vendor advisory for mitigations.

References

• https://github.com/danoli3/FreeImage
• https://github.com/danoli3/FreeImage/blob/3.19.24/Source/FreeImage/PluginGIF.cpp#L719-L772
• https://github.com/danoli3/FreeImage/commit/0da5ddb4d311e5222251348cca1aa988478b1034
• https://github.com/danoli3/FreeImage/commit/96f4099f8e307484ba69b4aa14d772b7679a1bfb
• https://github.com/danoli3/FreeImage/pull/183
• https://github.com/danoli3/FreeImage/releases/tag/3.19.25
• https://www.vulncheck.com/advisories/freeimage-danoli3-fork-before-3.19.25-heap-buffer-overflow-via-gif-playback-compositing

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