Deserialization in Internlm Lmdeploy
CVE-2026-119706
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/InternLM/lmdeploy/issues/4698 (issue-tracking)
- github.com/InternLM/lmdeploy (product)
- github.com/InternLM/lmdeploy/blob/v0.18.0/lmdeploy/serve/openai/endpoints/manag… (technical-description)
- github.com/InternLM/lmdeploy/blob/v0.18.0/lmdeploy/turbomind/turbomind.py (technical-description)
- github.com/InternLM/lmdeploy/pull/4964 (issue-tracking, patch)
- www.vulncheck.com/advisories/lmdeploy-0.9.0-through-0.18.0-unauthenticated-rce-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119706?
- CVE-2026-119706 is a critical-severity vulnerability in Internlm Lmdeploy, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-10-30.
- How severe is CVE-2026-119706?
- Critical severity. CVSS v3 base score is 9.8 out of 10.