CVE-2026-101203 | FastStone Image Viewer up to 8.3 1bpp RLE Decoder out-of-bounds write

A vulnerability classified as critical has been found in FastStone Image Viewer up to 8.3. The impacted element is an unknown function of the component 1bpp RLE Decoder. The manipulation leads to out-of-bounds write.

This vulnerability is documented as CVE-2026-101203. The attack can be initiated remotely. Additionally, an exploit exists.

The vendor was contacted early about this disclosure but did not respond in any way.VulDB Recent EntriesRead More