CVE-2025-3677 MEDIUM

CVE-2025-3677: lm-sys fastchat apply_delta.py apply_delta_low_cpu_mem deserialization

Vendor Lm-Sys
Product fastchat
Weakness CWE-502 · Unsafe deserialization
Published April 16, 2025
Last update April 21, 2025
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 16, 2025 CVE published
April 21, 2025 Record updated