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Vulnerabilities CVE-2026-63767

CVE-2026-63767

Critical
Open
TLP:CLEAR

ktransformers Unauthenticated Pickle Deserialization RCE via ZMQ

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Description

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.

Details

CVSS Score
9.3
EPSS Score
0.74%

51.7th percentile

CVSS Vector
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
Confidence
90%
Published
Jul 20, 2026
Last Modified
Jul 20, 2026
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