CVE-2025-1945

picklescan - Zip Flag Bit Exploit Crashes Picklescan But Not PyTorch

Severity Score

5.3

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

picklescan before 0.0.23 fails to detect malicious pickle files inside PyTorch model archives when certain ZIP file flag bits are modified. By flipping specific bits in the ZIP file headers, an attacker can embed malicious pickle files that remain undetected by PickleScan while still being successfully loaded by PyTorch's torch.load(). This can lead to arbitrary code execution when loading a compromised model.

*Credits: Trevor Madge (@madgetr) of Sonatype

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

Passive

System

Vulnerable | Subsequent

Confidentiality

None

Integrity

Low

Availability

Low

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

Poc

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2025-03-04 CVE Reserved
2025-03-10 CVE Published
2025-03-10 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-345: Insufficient Verification of Data Authenticity

CAPEC

References (3)

URL	Tag	Source
https://sites.google.com/sonatype.com/vulnerabilities/cve-2025-1945	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/mmaitre314/picklescan/commit/e58e45e0d9e091159c1554f9b04828bbb40b9781	2025-03-10

URL	Date	SRC
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-w8jq-xcqf-f792	2025-03-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mmaitre314 Search vendor "Mmaitre314"		Picklescan Search vendor "Mmaitre314" for product "Picklescan"				>= 0.0.1 < 0.0.23 Search vendor "Mmaitre314" for product "Picklescan" and version " >= 0.0.1 < 0.0.23"		en		Affected