CVE-2021-29365

Name: CVE-2021-29365
Creator: NVD / NIST
Published: 2021-09-28T16:15:08.25+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2021-29365 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Irfanview 4.57 is affected by an infinite loop when processing a crafted BMP file in the EFFECTS!AutoCrop_W component. This can cause a denial of service (DOS).. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

Irfanview 4.57 is affected by an infinite loop when processing a crafted BMP file in the EFFECTS!AutoCrop_W component. This can cause a denial of service (DOS).

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

0.64%

45.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-835

Affected Software

Vendor	Product	Versions
Irfanview	Irfanview	4.57

References

https://github.com/moshekaplan/Research/tree/main/IrfanViewThird Party Advisory
https://github.com/moshekaplan/Research/tree/main/IrfanViewThird Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-29365?

Irfanview 4.57 is affected by an infinite loop when processing a crafted BMP file in the EFFECTS!AutoCrop_W component. This can cause a denial of service (DOS).

How severe is CVE-2021-29365?

CVE-2021-29365 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29365?

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-2021-29365?

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

Scan your code now

Source: NVD / NIST