CVE-2020-23555

Name: CVE-2020-23555
Creator: NVD / NIST
Published: 2022-09-16T03:15:09.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2020-23555 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000007e6e.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000007e6e.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.31%

22.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

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: Sep 16, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23555?

IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000007e6e.

How severe is CVE-2020-23555?

CVE-2020-23555 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23555?

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-2020-23555?

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

Scan your code now

Source: NVD / NIST