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

Severity: high (CVSS 8.4 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-15 · updated 2026-06-17
Weakness: CWE-119

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.

Affected products

Burnaware PDF Shaper: from 3.5 through 3.6

References

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

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