[ CVE-2026-101203 · Published 28 Sep 2026 ]

Vulnerability in FastStone Image Viewer

CVSS 6.3 EPSS <1%No fix listed yet

[ Description ]Official description

A vulnerability 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. The attack can be initiated remotely. The vendor was contacted early about this disclosure but did not respond in any way.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.