CVE-2025-71359 - CVE House

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Status published High CVE-2025-71359

picklescan - Unsafe Deserialization via lib2to3.pgen2.grammar.Grammar.loads

7.6 CVSS

Vulnerability Description

picklescan before 0.0.29 fails to detect malicious pickle payloads that utilize lib2to3.pgen2.grammar.Grammar.loads in the reduce method, allowing remote code execution. Attackers can craft pickle files embedding dangerous code that evades picklescan detection and executes during pickle.load() deserialization.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

FredericDT

References

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picklescan - Arbitrary Code Execution via Undetected profile.Profile.run

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Affected Vendor

picklescan

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Affected Software

picklescan

Vulnerable Versions:

0, 0.0.29

Timeline

Official Publish: July 4th, 2026

Last Modified: July 6th, 2026

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1059 Command and Scripting Interpreter

T1505.003 Web Shell

T1105 Ingress Tool Transfer

Command and Control

T1068 Exploitation for Privilege Escalation

Privilege Escalation