CVE-2020-23567

Name: CVE-2020-23567
Creator: NVD / NIST
Published: 2021-11-05T17:15:11.173+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2020-23567 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Irfanview v4.53 allows attackers to to cause a denial of service (DoS) via a crafted JPEG 2000 file. Related to "Integer Divide By Zero starting at JPEG2000!ShowPlugInSaveOptions_W+0x00000000000082ea". EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

Irfanview v4.53 allows attackers to to cause a denial of service (DoS) via a crafted JPEG 2000 file. Related to "Integer Divide By Zero starting at JPEG2000!ShowPlugInSaveOptions_W+0x00000000000082ea"

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

0.90%

55.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-369

Affected Software

Vendor	Product	Versions
Irfanview	Irfanview	4.53

References

https://github.com/KamasuOri/publicResearch/tree/master/poc/irfanview/2Exploit, Third Party Advisory
https://github.com/KamasuOri/publicResearch/tree/master/poc/irfanview/2Exploit, Third Party Advisory

Timeline

Published: Nov 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23567?

How severe is CVE-2020-23567?

CVE-2020-23567 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23567?

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-2020-23567?

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

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Source: NVD / NIST