{"id":"CVE-2026-26210","title":"KTransformers Unsafe Deserialization RCE via balance_serve","summary":"KTransformers through 0.5.3 contains an unsafe deserialization vulnerability in the balance_serve backend mode where the scheduler RPC server binds a ZMQ ROUTER socket to all interfaces with no authentication and deserializes incoming me…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-502"],"vendor":"kvcache-ai","product":"ktransformers","affected":["ktransformers <= 0.5.3"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"total","timestamp":"2026-04-24T14:02:53.606000Z"},"exploitAvailable":true,"published":"2026-04-23","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:01:30.381Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-26210","references":[{"url":"https://chocapikk.com/posts/2026/ktransformers-pickle-rce/"},{"url":"https://github.com/kvcache-ai/ktransformers/pull/1944"},{"url":"https://www.vulncheck.com/advisories/ktransformers-unsafe-deserialization-rce-via-balance-serve"}],"tags":["cve.org","exploit-available"],"epss":0.00703,"epssPercentile":0.53556,"ingestedAt":"2026-11-08T14:51:22.470Z","slug":"CVE-2026-26210","body":"## Overview\n\nKTransformers through 0.5.3 contains an unsafe deserialization vulnerability in the balance_serve backend mode where the scheduler RPC server binds a ZMQ ROUTER socket to all interfaces with no authentication and deserializes incoming messages using pickle.loads() without validation. Attackers can send a crafted pickle payload to the exposed ZMQ socket to execute arbitrary code on the server with the privileges of the ktransformers process.\n\n## Affected\n\n- `ktransformers <= 0.5.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":66,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}