CVE-2026-119706

CRITICAL 9.8

LMDeploy 0.9.0 through 0.18.0 Unauthenticated RCE via /update_weights Pickle Deserialization

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

InternLM LMDeploy 0.9.0 through 0.18.0 contains an unauthenticated remote code execution vulnerability that allows remote attackers to run OS commands by sending pickled data to the /update_weights endpoint. Attackers can submit a base64-encoded crafted pickle in serialized_named_tensors, which ForkingPickler.loads deserializes without validation, executing commands as the api_server process.

CWE	CWE-502
Vendor	internlm
Product	lmdeploy
Published	Oct 30, 2026
Last Updated	Oct 30, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

InternLM / lmdeploy

0.9.0 ≤ 0.18.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/InternLM/lmdeploy/issues/4698 github.com: https://github.com/InternLM/lmdeploy github.com: https://github.com/InternLM/lmdeploy/blob/v0.18.0/lmdeploy/serve/openai/endpoints/management.py#L55-L60 github.com: https://github.com/InternLM/lmdeploy/blob/v0.18.0/lmdeploy/turbomind/turbomind.py#L345 github.com: https://github.com/InternLM/lmdeploy/pull/4964 vulncheck.com: https://www.vulncheck.com/advisories/lmdeploy-0.9.0-through-0.18.0-unauthenticated-rce-via-update-weights-pickle-deserialization

Credits

starsalt0124