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CVE-2025-64512— pdfminer.six vulnerable to Arbitrary Code Execution via Crafted PDF Input

Quick assessment

Affected
pdfminer pdfminer.six
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

pdfminer.six是pdfminer开源的一款用于从PDF文档中提取信息的工具。 pdfminer.six 20251107之前版本存在代码问题漏洞，该漏洞源于CMapDB._load_data函数使用pickle.loads反序列化恶意pickle文件，可能导致执行任意代码。

CVSS 8.6 · High EPSS 0.31% · P24
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I. Basic Information for CVE-2025-64512

Vulnerability Information
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Vulnerability Title
pdfminer.six vulnerable to Arbitrary Code Execution via Crafted PDF Input
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
pdfminer.six 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pdfminer.six是pdfminer开源的一款用于从PDF文档中提取信息的工具。 pdfminer.six 20251107之前版本存在代码问题漏洞，该漏洞源于CMapDB._load_data函数使用pickle.loads反序列化恶意pickle文件，可能导致执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pdfminer pdfminer.six < 20251107 -

II. Public POCs for CVE-2025-64512

# POC Description Source Link Shenlong Link
1 A Proof-of-Concept for CVE-2025-64512 using a polyglot file. https://github.com/luigigubello/CVE-2025-64512-Polyglot-PoC POC Details
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8330 chars
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III. Intelligence Information for CVE-2025-64512

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Patches & Fixes for CVE-2025-64512 (1)

Vendor Advisories for CVE-2025-64512 (1)

IV. Related Vulnerabilities

Same weakness: CWE-502

V. Comments for CVE-2025-64512

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