pdfminer.six 20251107 Pickle deserialization

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in pdfminer.six. This issue affects some unknown processing of the component Pickle Handler. The manipulation leads to deserialization. This vulnerability is uniquely identified as CVE-2025-70559. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in pdfminer.six. This issue affects an unknown code of the component Pickle Handler. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-70559 since 01/09/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 297747 (Linux Distros Unpatched Vulnerability : CVE-2025-70559), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 20251230 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (297747). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 6.5
ADP CISA Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 297747
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-70559

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: pdfminer.six 20251230

Timelineinfo

01/09/2026 CVE reserved
02/03/2026 +25 days Advisory disclosed
02/03/2026 +0 days VulDB entry created
02/11/2026 +8 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-f83h-ghpp-7wcc
Status: Confirmed

CVE: CVE-2025-70559 (🔒)
GCVE (CVE): GCVE-0-2025-70559
GCVE (VulDB): GCVE-100-344117

Entryinfo

Created: 02/03/2026 21:22
Updated: 02/11/2026 19:47
Changes: 02/03/2026 21:22 (54), 02/04/2026 11:55 (2), 02/11/2026 19:47 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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