CVE-2026-116463

FastStone Image Viewer Box-Average Downsampler FUN_0062d96c out-of-bounds

FastStone Image Viewer

Open in Threatline Record JSON

CVSS

5.3Medium

ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV

Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet

Fixed inNone listedNo source names a fixed version. Check the vendor advisory below

Published26 Oct 2026Updated 26 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Reports 1

1 outlet mention it. Reports are not confirmation; each links to its source.

🚨 CVE-2026-116463 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 oTelegram: CVE Notify, 26 Oct 2026

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.

Text from CVE List

Affected versions 6

Image Vieweraffected: 8.0CVE List
Image Vieweraffected: 8.1CVE List
Image Vieweraffected: 8.2CVE List
Image Vieweraffected: 8.3CVE List
Image Vieweraffected: 8.4CVE List
Image Vieweraffected: 8.5CVE List