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CVE-2026-63767

ktransformers Unauthenticated Pickle Deserialization RCE via ZMQ

ktransformers through 0.6.3, fixed in commit def0f93, contains an unauthenticated pickle deserialization vulnerability that allows remote attackers to execute arbitrary commands by sending crafted pickle payloads to the SchedulerServer ZMQ ROUTER socket bound to all interfaces. Attackers can exploit malicious __reduce__ methods embedded in crafted pickle payloads to execute arbitrary shell commands as the server process.

CVSS 4.0 · 9.3 Critical EPSS 1.1% KEV · Not listed
Vendors
Kvcache-ai
Products
Ktransformers
CVE-2026-26210

KTransformers Unsafe Deserialization RCE via balance_serve

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 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.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Kvcache-ai
Products
Ktransformers