{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-96560","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-09-23T13:13:12.619Z","datePublished":"2026-09-23T13:32:38.336Z","dateUpdated":"2026-09-24T14:23:23.635Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-09-24T14:23:23.635Z"},"datePublic":"2026-09-22T00:00:00.000Z","title":"LightLLM through 1.2.0 Unauthenticated Remote Code Execution via NCCL PD RPyC Control Channel","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Deserialization of Untrusted Data","cweId":"CWE-502","type":"CWE"}]}],"affected":[{"vendor":"ModelTC","product":"LightLLM","packageName":"LightLLM","repo":"https://github.com/ModelTC/lightllm","packageURL":"pkg:github/ModelTC/lightllm","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","versionType":"semver","lessThanOrEqual":"1.2.0"}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.3,"baseSeverity":"CRITICAL"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"}}],"references":[{"url":"https://github.com/ModelTC/LightLLM/issues/1590","tags":["issue-tracking"],"name":"GitHub Issue #1590"},{"url":"https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/model_infer/mode_backend/pd/nccl_kv_transporter.py#L437-L461","tags":["technical-description"]},{"url":"https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/model_infer/mode_backend/pd/nccl_kv_transporter.py#L411-L415","tags":["technical-description"]},{"url":"https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/model_infer/mode_backend/pd/nccl_kv_transporter.py#L247-L249","tags":["technical-description"]},{"url":"https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/model_infer/mode_backend/pd/kv_transporter.py#L20-L36","tags":["technical-description"]},{"url":"https://github.com/ModelTC/lightllm","tags":["product"]},{"name":"VulnCheck Advisory: LightLLM through 1.2.0 Unauthenticated Remote Code Execution via NCCL PD RPyC Control Channel","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/lightllm-through-1.2.0-unauthenticated-remote-code-execution-via-nccl-pd-rpyc-control-channel"}],"credits":[{"lang":"en","value":"Mingkai Yu","type":"finder"},{"lang":"en","value":"Jiapeng Li","type":"finder"},{"lang":"en","value":"Jiajia Liu","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-23T14:30:06.350499Z","id":"CVE-2026-96560","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-23T14:33:27.577Z"}}]}}