---
id: CVE-2020-23546
title: >-
  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 a…
summary: >-
  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 a…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
vendor: irfanview
product: irfanview
affected:
  - irfanview = 4.54
published: '2021-10-28'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-23546'
references:
  - url: 'https://github.com/nhiephon/Research/blob/master/README.md'
    label: cve@mitre.org
  - url: 'https://www.irfanview.com/plugins.htm'
    label: cve@mitre.org
  - url: 'http://irfanview.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/nhiephon/Research/blob/master/README.md'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.irfanview.com/plugins.htm'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00958
epssPercentile: 0.59857
ingestedAt: '2026-07-06T17:03:23.596Z'
---

## Overview

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.

## Affected

- `irfanview = 4.54`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.