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I. Basic Information for CVE-2025-3677
Vulnerability Information

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Vulnerability Title
lm-sys fastchat apply_delta.py apply_delta_low_cpu_mem deserialization
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability classified as critical was found in lm-sys fastchat up to 0.2.36. This vulnerability affects the function split_files/apply_delta_low_cpu_mem of the file fastchat/model/apply_delta.py. The manipulation leads to deserialization. An attack has to be approached locally.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
FastChat 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FastChat是LMSYS开源的一个用于训练、部署和评估基于大型语言模型的聊天机器人的开放平台。 FastChat 0.2.36及之前版本存在代码问题漏洞,该漏洞源于fastchat/model/apply_delta.py文件split_files/apply_delta_low_cpu_mem函数反序列化问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
lm-sysfastchat 0.2.0 -
II. Public POCs for CVE-2025-3677
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III. Intelligence Information for CVE-2025-3677
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