danoli3 FreeImage up to 3.19.24 GIF Plugin PluginGIF.cpp GifPlaybackCompositeFrame/GifPlaybackFillRect heap-based overflow

Summaryinfo

A vulnerability was found in danoli3 FreeImage up to 3.19.24. It has been rated as problematic. This impacts the function GifPlaybackCompositeFrame/GifPlaybackFillRect of the file PluginGIF.cpp of the component GIF Plugin. This manipulation causes heap-based overflow. The identification of this vulnerability is CVE-2026-118753. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic was found in danoli3 FreeImage up to 3.19.24. Affected by this vulnerability is the function GifPlaybackCompositeFrame/GifPlaybackFillRect of the file PluginGIF.cpp of the component GIF Plugin. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-118753 since 10/28/2026. The exploitation appears to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 3.19.25 eliminates this vulnerability.

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Productinfo

Vendor

• danoli3

Name

• FreeImage

Version

• 3.19.0
• 3.19.1
• 3.19.2
• 3.19.3
• 3.19.4
• 3.19.5
• 3.19.6
• 3.19.7
• 3.19.8
• 3.19.9
• 3.19.10
• 3.19.11
• 3.19.12
• 3.19.13
• 3.19.14
• 3.19.15
• 3.19.16
• 3.19.17
• 3.19.18
• 3.19.19
• 3.19.20
• 3.19.21
• 3.19.22
• 3.19.23
• 3.19.24

Website

• Product: https://github.com/danoli3/FreeImage/

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