CVE-2026-63767

CRITICAL9.8

ktransformers Unauthenticated Pickle Deserialization RCE via ZMQ

Published Jul 20, 2026

Modified 1 months ago

Details

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.

References

FIX

https://github.com/kvcache-ai/ktransformers/commit/def0f9313d6e063b5c5ccdfa1f6707f7a40dfdca

DETECTION

https://github.com/kvcache-ai/ktransformers/issues/2087

FIX

https://github.com/kvcache-ai/ktransformers/pull/2091

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-63767

ADVISORY

https://www.vulncheck.com/advisories/ktransformers-unauthenticated-pickle-deserialization-rce-via-zmq

CVSS Analysis