CVE-2025-64512
pdfminer.six vulnerable to Arbitrary Code Execution via Crafted PDF Input
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.
- Affected
- pdfminer · pdfminer.six
- CVSS v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS v3.1 GITHUB
- 8.6 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - EPSS
- 0.33% chance of exploitation in the next 30 days, 25th percentile
- Published
- 2025-11-10
- Updated
- 2026-01-08
Proof-of-concept exploits (12)
- advisories/GHSA-wf5f-4jwr-ppcp
- BardLaudian/CVE-2025-645121★ · 2026-09-23
- DodgeNefoli/CVE-2025-645120★ · 2026-08-12
- MehdiChyhab/CVE-2025-64512-exploit0★ · 2026-07-21
- joeack123/PoC-for-CVE-2025-645120★ · 2026-07-19
- luigigubello/CVE-2025-64512-Polyglot-PoC8★ · 2026-04-10
- matesz44/CVE-2025-645124★ · 2026-07-19
- oguzylmzx/CVE-2025-64512-pdfminer-PoC0★ · 2026-08-15
- saadhassan77/CVE-2025-64512---pdfminer.six-Remote-Code-Execution-RCE-0★ · 2026-07-27
- stoic-crawler/CVE-2025-645120★ · 2026-07-22
- Jinook-Kim/CVE-2025-64512_PoC0★ · 2026-09-15
- SASbot01/HTB-Bedside0★ · 2026-10-02
Security advisories
- pdfminer/pdfminer.six/security/advisories/GHSA-wf5f-4jwr-ppcp
- pdfminer/pdfminer.six/commit/b808ee05dd7f0c8ea8ec34bdf394d40e63501086