Vulnerability · Published Sep 30, 2026 · Assigned by VulnCheck
CVE-2026-103395LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Visual-Only RPyC Service
Critical 9.8
In plain English
A critical-severity unsafe deserialization in LightLLM from ModelTC. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.6%top 50.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
LightLLM through 1.2.0 visual_only deployments expose an unauthenticated RPyC service with allow_pickle enabled that deserializes attacker-supplied arguments in the remote_infer_images method. Attackers can reach the visual RPyC port and pass objects with __reduce__ methods to execute arbitrary code with service account privileges.
Affected products (as reported)
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- GitHub Issue #1610 issue-tracking
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/visualserver/objs.py#L6-L11 technical-description
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/visualserver/visual_only_manager.py#L138-L140 technical-description
- https://github.com/ModelTC/LightLLM product
- VulnCheck Advisory: LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Visual-Only RPyC Service third-party-advisory