CVE-2025-64512
8.6 · HIGHOverview
CVE-2025-64512 is a high-severity vulnerability affecting pdfminer pdfminer.six. It was published on November 10, 2025 and has a CVSS 3.1 base score of 8.6 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Pdfminer.six is a community maintained fork of the original PDFMiner, a tool for extracting information from PDF documents. Prior to version 20251107, pdfminer.six will execute arbitrary code from a malicious pickle file if provided with a malicious PDF file. The `CMapDB._load_data()` function in pdfminer.six uses `pickle.loads()` to deserialize pickle files. These pickle files are supposed to be part of the pdfminer.six distribution stored in the `cmap/` directory, but a malicious PDF can specify an alternative directory and filename as long as the filename ends in `.pickle.gz`. A malicious, zipped pickle file can then contain code which will automatically execute when the PDF is processed. Version 20251107 fixes the issue.
Remediation
Check the references section for vendor advisories and patches from pdfminer. Update pdfminer.six to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| pdfminer | pdfminer.six | >= 0, < 2025-11-07 | Affected |
References
Frequently Asked Questions
What is CVE-2025-64512?
CVE-2025-64512 is a high-severity vulnerability affecting pdfminer pdfminer.six. It was published on November 10, 2025 and has a CVSS 3.1 base score of 8.6 (HIGH).
How severe is CVE-2025-64512?
This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-64512?
Check the references section for vendor advisories and patches from pdfminer. Update pdfminer.six to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-64512?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-64512 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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