Is CVE-2026-116463 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-116463?

CVE-2026-116463 has a CVSS v3 severity of MEDIUM (6.3).

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CVE-2026-116463

Description

A vulnerability was identified in FastStone Image Viewer up to 8.5. Affected is the function FUN_0062d96c of the component Box-Average Downsampler Engine. The manipulation leads to out-of-bounds read. It is possible to initiate the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.