CVE-2025-66455 LMDeploy - Remote Code Execution

LMDeploy 0.9.2 to < 0.16.0 contains a remote code execution caused by unsafe Python pickle deserialization in PyTorch DistServe control plane, letting unauthenticated attackers execute arbitrary code remotely via crafted payloads.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.69% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
18 September 2026
Updated
15 October 2026
Weakness
CWE-502

Vendor fix

Upgrade to LMDeploy version 0.16.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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