CVE-2026-63767criticalCWE-502

CVE-2026-63767: critical vulnerability in kvcache-ai ktransformers

ktransformers Unauthenticated Pickle Deserialization RCE via ZMQ

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48Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.3epss 1.1%
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/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
kvcache-ai · ktransformers
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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