CVE-2025-70559
MEDIUM EPSS 12.8%
Published Feb 3, 20264mo ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Published Feb 3, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago
Description
pdfminer.six before 20251230 contains an insecure deserialization vulnerability in the CMap loading mechanism. The library uses Python pickle to deserialize CMap cache files without validation. An attacker with the ability to place a malicious pickle file in a location accessible to the application can trigger arbitrary code execution or privilege escalation when the file is loaded by a trusted process. This is caused by an incomplete patch to CVE-2025-64512.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
12.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-502 Deserialization of Untrusted Data Validation
References 2
- github.com https://github.com/advisories/GHSA-f83h-ghpp-7wcc
- github.com https://github.com/pdfminer/pdfminer.six/security/advisories/GHSA-f83h-ghpp-7wcc
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.