CVE-2025-34106
CVE-2025-34106 is a high-severity vulnerability with a CVSS 4.0 base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: High (CVSS 4.0 base score 8.4)
- EPSS exploit prediction: 0% (25th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-21428
- Weakness: CWE-119
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2025-34106?
- 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.
- How severe is CVE-2025-34106?
- CVE-2025-34106 has a CVSS 4.0 base score of 8.4, rated high severity.
- Is CVE-2025-34106 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-34106?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-34106 have an EU (EUVD) identifier?
- Yes. CVE-2025-34106 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21428.
- When was CVE-2025-34106 published?
- CVE-2025-34106 was published on 2025-07-15 and last updated on 2026-06-17.
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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