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CVE-2026-63767 is an unauthenticated remote code execution vulnerability in ktransformers affecting versions through 0.6.3. The flaw is caused by unsafe deserialization of untrusted Python pickle data received by the SchedulerServer ZMQ ROUTER socket, which is bound to all interfaces. A remote attacker can send a crafted pickle payload containing a malicious reduce method, causing arbitrary shell commands to be executed in the context of the server process. The issue was fixed in commit def0f93.
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No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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