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CVE-2026-116463— FastStone Image Viewer Box-Average Downsampler FUN_0062d96c out-of-bounds

Quick assessment

Affected
FastStone Image Viewer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 FastStone Image Viewer 8.5 及以下版本中发现一个漏洞。该漏洞影响组件"Box-Average Downsampler Engine"中的函数 FUN_0062d96c。攻击者可利用该漏洞触发越界读取（out-of-bounds read），且攻击可远程发起。漏洞披露初期已联系厂商，但厂商未作任何回应。

CVSS 6.3 · Medium
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I. Basic Information for CVE-2026-116463

Vulnerability Information
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Vulnerability Title
FastStone Image Viewer Box-Average Downsampler FUN_0062d96c out-of-bounds
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FastStone Image Viewer 8.0 cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-116463

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III. Intelligence Information for CVE-2026-116463

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Other References for CVE-2026-116463 (3)

IV. Related Vulnerabilities

Same product: Image Viewer
Same vendor: FastStone
Same weakness: CWE-125