MediumVulnerabilityLLM-specific
CVE-2025-3677: FastChat deserialization flaw in apply_delta local model handling
- Source
- NVD(opens in a new tab)
- Identifier
- CVE-2025-3677
- Published
- Record updated
- Known exploitation
- Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
- EPSS
- 0.2%
Summary
CVE-2025-3677 is a critical vulnerability in lm-sys fastchat up to 0.2.36. It affects the function split_files/apply_delta_low_cpu_mem in fastchat/model/apply_delta.py and leads to deserialization. An attack must be carried out locally.
Mitigation
The source does not state a fix yet. Check the original advisory for updates.
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