CVE-2021-26235

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

FastStone Image Viewer <= 7.5 is affected by a user mode write access violation near NULL at 0x005bdfc9, triggered when a user opens or views a malformed CUR file that is mishandled by FSViewer.exe. Attackers could exploit this issue for a Denial of Service (DoS) or possibly to achieve code execution.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Mar 18, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-26235: High severity, CVSS 7.8 | Vulnix