CVE-2025-64512

Name: CVE-2025-64512
Creator: NVD / NIST
Published: 2025-11-10T22:15:40.067+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2025-64512 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.27%

19.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Pdfminer	Pdfminer.Six	< 2025-11-07
Debian	Debian Linux	11.0

References

https://github.com/pdfminer/pdfminer.six/commit/b808ee05dd7f0c8ea8ec34bdf394d40e63501086Patch
https://github.com/pdfminer/pdfminer.six/releases/tag/20251107Release Notes
https://github.com/pdfminer/pdfminer.six/security/advisories/GHSA-wf5f-4jwr-ppcpExploit, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/11/msg00017.htmlMailing List
https://lists.debian.org/debian-lts-announce/2026/01/msg00005.html
https://github.com/pdfminer/pdfminer.six/security/advisories/GHSA-wf5f-4jwr-ppcpExploit, Vendor Advisory

Timeline

Published: Nov 10, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-64512?

How severe is CVE-2025-64512?

CVE-2025-64512 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2025-64512?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-64512?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST