CVE-2025-3677CWE-20CWE-502

lm-sys fastchat apply_delta.py apply_delta_low_cpu_mem deserialization

Medium · published April 16, 2025

CVSS v4.0
4.8
EPSS
0%
Percentile
10.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
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
EPSS
0.00206 · 10.1th percentile
Weaknesses
CWE-20 · Improper Input Validation; CWE-502 · Deserialization of Untrusted Data
Published
2025-04-16T08:31Z
EPSS history
Timeline
  • 16 APR 08:31Z
    lm-sys fastchat apply_delta.py apply_delta_low_cpu_mem deserialization
    cvelistv5