CVE-2026-103040

LightLLM through 1.2.0 contains a remote code execution vulnerability in the router profiler service when started with --enable_profiling flag. The service exposes an unauthenticated RPyC server with pickle deserialization enabled, allowing attackers to execute arbitrary code by sending crafted serialized objects to the profiler command queue.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/ModelTC/LightLLM
https://github.com/ModelTC/LightLLM/issues/1597
https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/profiler_service.py#L32-L34
https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/profiler_service.py#L46-L50
https://www.vulncheck.com/advisories/lightllm-through-1.2.0-unauthenticated-remote-code-execution-via-router-profiler-rpyc-service
https://github.com/ModelTC/LightLLM/issues/1597

Configurations

No configuration.

History

30 Sep 2026, 15:22

Type	Values Removed	Values Added
References	~~() https://github.com/ModelTC/LightLLM/issues/1597 -~~	() https://github.com/ModelTC/LightLLM/issues/1597 -

29 Sep 2026, 23:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-29 23:17

Updated : 2026-09-30 15:22

NVD link : CVE-2026-103040

Mitre link : CVE-2026-103040

CVE.ORG link : CVE-2026-103040

JSON object : View

Products Affected

No product.

CWE

CWE-502

Deserialization of Untrusted Data

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