High severity7.8NVD Advisory· Published Mar 18, 2021· Updated Jun 17, 2026
CVE-2021-26234
CVE-2021-26234
Description
FastStone Image Viewer <= 7.5 is affected by a user mode write access violation at 0x00402d8a, 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.
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Affected products
3cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:*range: <=7.5
- (no CPE)range: <=7.5
- FastStone/FastStone Image Viewerdescription
Patches
Vulnerability mechanics
References
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