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CVE-2026-33625— LMDeploy vulnerable to arbitrary code execution via eval() of untrusted quant_dtype in model config loading

Quick assessment

Affected
InternLM lmdeploy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LMDeploy is a toolkit for compressing, deploying, and serving large language models. Versions 012.1 through 0.12.2 contain a code injection vulnerability in line 620 that allows an attacker to execute arbitrary Python code by publishing a malicious HuggingFace

CVSS 8.8 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
InternLM lmdeploy >= 0.12.1, < 0.12.3 affected
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I. Basic Information for CVE-2026-33625

Vulnerability Information

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Vulnerability Title
LMDeploy vulnerable to arbitrary code execution via eval() of untrusted quant_dtype in model config loading
Source: CVE Program / CVE List V5
Vulnerability Description
LMDeploy is a toolkit for compressing, deploying, and serving large language models. Versions 012.1 through 0.12.2 contain a code injection vulnerability in `lmdeploy/pytorch/config.py` line 620 that allows an attacker to execute arbitrary Python code by publishing a malicious HuggingFace model with a crafted `quantization_config.quant_dtype` value. When a user loads the model with lmdeploy, the `quant_dtype` is passed to `eval(f'torch.{quant_dtype}')` without any validation. Version 0.12.3 contains a patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
InternLM lmdeploy >= 0.12.1, < 0.12.3 -

II. Public POCs for CVE-2026-33625

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III. Intelligence Information for CVE-2026-33625

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Other References for CVE-2026-33625 (1)

IV. Related Vulnerabilities

Same product: lmdeploy
Same vendor: InternLM
Same weakness: CWE-400

V. Comments for CVE-2026-33625

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