CVE-2026-116463

MEDIUM 6.3

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

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-125 CWE-119
Vendor	faststone
Product	image viewer
Published	Oct 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

FastStone / Image Viewer

8.0 8.1 8.2 8.3 8.4 8.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 jacksonstone (VulDB User) VulDB CNA Team