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 4.0

9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-25)

CWE

CWE-502

Published

2026-09-29

Modified

2026-09-30

Record from

the NVD, synced 2026-10-19

References

• 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

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