CVE-2013-3946: Extensis Mrsid

High severity, CVSS 7.8. EPSS: 2.5% chance of exploitation in the next 30 days.

Heap-based buffer overflow in the MrSID plugin (MrSID.dll) before 4.37 for IrfanView allows remote attackers to execute arbitrary code via a levels header.

Affected products

• Extensis Mrsid: before 4.37 (fixed in 4.37)

Published 2020-01-02. Last modified 2026-06-16.