CVE-2020-23561

Name: CVE-2020-23561
Creator: NVD / NIST
Published: 2022-07-18T00:15:08.243+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2020-23561 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!ShowPlugInSaveOptions_W+0x0000000000005722.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

Description

IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!ShowPlugInSaveOptions_W+0x0000000000005722.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.32%

23.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Irfanview	Irfanview	4.54

References

https://github.com/nhiephon/ResearchThird Party Advisory
https://www.irfanview.com/plugins.htmProduct
https://github.com/nhiephon/ResearchThird Party Advisory
https://www.irfanview.com/plugins.htmProduct

Timeline

Published: Jul 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23561?

IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!ShowPlugInSaveOptions_W+0x0000000000005722.

How severe is CVE-2020-23561?

CVE-2020-23561 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23561?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-23561?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST