CVE-2026-96560
LightLLM through 1.2.0 Unauthenticated Remote Code Execution via NCCL PD RPyC Control Channel
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: yes
- Technical impact: total
Summary
LightLLM through 1.2.0 contains a remote code execution vulnerability in the KV-transfer worker when started with --pd_trans_mode nccl, which exposes an unauthenticated RPyC control channel that deserializes attacker-supplied data. Attackers can send malicious pickled objects to the exposed RPyC ThreadedServer to execute arbitrary code with the privileges of the LightLLM service account.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: total
- Record last updated
Affected versions
- LightLLM
through 1.2.0
References 7
GitHub · ModelTC/LightLLM
GitHub · ModelTC/lightllm
- lightllm/server/router/model_infer/mode_backend/pd/nccl_kv_transporter.py · L437-L461
- lightllm/server/router/model_infer/mode_backend/pd/nccl_kv_transporter.py · L411-L415
- lightllm/server/router/model_infer/mode_backend/pd/nccl_kv_transporter.py · L247-L249
- lightllm/server/router/model_infer/mode_backend/pd/kv_transporter.py · L20-L36
- Repository