What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-26 · updated 2026-10-26
• Weakness: CWE-119

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.

Affected products

• FastStone Image Viewer: 8.0, 8.1, 8.2, 8.3, 8.4, 8.5

References

• https://vuldb.com/cve/CVE-2026-116463
• https://vuldb.com/submit/1013651
• https://vuldb.com/vuln/426360
• https://vuldb.com/vuln/426360/cti

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