CVE-2020-23557: Irfanview

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!ShowPlugInSaveOptions_W+0x000000000000755d.

Affected products

• Irfanview Irfanview: version 4.54 only

Published 2022-09-16. Last modified 2026-06-17.