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CVE-2026-103041— LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Embed Cache RPyC Service

Quick assessment

Affected
ModelTC LightLLM
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LightLLM 1.2.0 及以下版本的多模态部署中，暴露了一个未认证的 RPyC 缓存服务，并启用了在所有网络接口上均可访问的 pickle 反序列化功能。攻击者可以向公开的缓存方法发送精心构造的序列化对象，从而以服务权限执行任意代码。

CVSS 9.8 · Critical
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I. Basic Information for CVE-2026-103041

Vulnerability Information
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Vulnerability Title
LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Embed Cache RPyC Service
Source: CVE Program / CVE List V5
Vulnerability Description
LightLLM through 1.2.0 multimodal deployments expose an unauthenticated RPyC cache service with pickle deserialization enabled on all interfaces. Attackers can send crafted serialized objects to exposed cache methods to execute arbitrary code with service privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ModelTC LightLLM 0 ~ 1.2.0 -

II. Public POCs for CVE-2026-103041

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III. Intelligence Information for CVE-2026-103041

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Other References for CVE-2026-103041 (1)

Other References for CVE-2026-103041 (4)

Same Patch Batch · ModelTC · 2026-09-29 · 3 CVEs total

CVE-2026-103040 9.8 CRITICAL LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Router Profiler RPyC Serv
CVE-2026-103042 7.5 HIGH LightLLM through 1.2.0 Unauthenticated Memory Exhaustion via NCCL Control Channel set_valu

IV. Related Vulnerabilities

Same product: LightLLM
Same vendor: ModelTC
Same weakness: CWE-502

V. Comments for CVE-2026-103041

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