What is CVE-2026-63767?

CVE-2026-63767 is a critical-severity vulnerability in Kvcache-ai Ktransformers, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-07-20.

How severe is CVE-2026-63767?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Kvcache-ai Ktransformers

CVE-2026-63767

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…

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Kvcache-ai Ktransformers — versions 0, def0f9313d6e063b5c5ccdfa1f6707f7a40dfdca

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

disclosure@vulncheck.com (issue-tracking, technical-description, exploit)
disclosure@vulncheck.com (issue-tracking, patch)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-63767?: CVE-2026-63767 is a critical-severity vulnerability in Kvcache-ai Ktransformers, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-07-20.
How severe is CVE-2026-63767?: Critical severity. CVSS v3 base score is 9.8 out of 10.