CVE-2020-23546

Name: CVE-2020-23546
Creator: NVD / NIST
Published: 2021-10-28T22:15:07.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.02%

Last modified Jun 17, 2026

CVE-2020-23546 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. IrfanView 4.54 allows attackers to cause a denial of service or possibly other unspecified impacts via a crafted XBM file, related to a "Data from Faulting Address is used as one or more arguments in a subsequent Function Call starting at FORMATS!ReadMosaic+0x0000000000000981.. EPSS estimates a 1.02% chance of exploitation in the next 30 days.

Description

IrfanView 4.54 allows attackers to cause a denial of service or possibly other unspecified impacts via a crafted XBM file, related to a "Data from Faulting Address is used as one or more arguments in a subsequent Function Call starting at FORMATS!ReadMosaic+0x0000000000000981.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

1.02%

58.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Irfanview	Irfanview	4.54

References

http://irfanview.comProduct
https://github.com/nhiephon/Research/blob/master/README.mdThird Party Advisory
https://www.irfanview.com/plugins.htmVendor Advisory
http://irfanview.comProduct
https://github.com/nhiephon/Research/blob/master/README.mdThird Party Advisory
https://www.irfanview.com/plugins.htmVendor Advisory

Timeline

Published: Oct 28, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23546?

How severe is CVE-2020-23546?

CVE-2020-23546 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.02% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23546?

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-2020-23546?

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

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Source: NVD / NIST