modelscope ms-swift library up to 2.6.1 load_model_meta deserialization

Summaryinfo

A vulnerability categorized as critical has been discovered in modelscope ms-swift library up to 2.6.1. This vulnerability affects the function load_model_meta. Executing a manipulation can lead to deserialization. This vulnerability appears as CVE-2025-50472. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in modelscope ms-swift library up to 2.6.1. It has been declared as critical. This vulnerability affects the function load_model_meta. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The modelscope/ms-swift library thru 2.6.1 is vulnerable to arbitrary code execution through deserialization of untrusted data within the `load_model_meta()` function of the `ModelFileSystemCache()` class. Attackers can execute arbitrary code and commands by crafting a malicious serialized `.mdl` payload, exploiting the use of `pickle.load()` on data from potentially untrusted sources. This vulnerability allows for remote code execution (RCE) by deceiving victims into loading a seemingly harmless checkpoint during a normal training process, thereby enabling attackers to execute arbitrary code on the targeted machine. Note that the payload file is a hidden file, making it difficult for the victim to detect tampering. More importantly, during the model training process, after the `.mdl` file is loaded and executes arbitrary code, the normal training process remains unaffected'meaning the user remains unaware of the arbitrary code execution.

This vulnerability was named CVE-2025-50472 since 06/16/2025. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/04/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Software Library

Vendor

• modelscope

Name

• ms-swift library

Version

• 2.6.0
• 2.6.1

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

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Once again VulDB remains the best source for vulnerability data.

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