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CVE-2026-63767— ktransformers Unauthenticated Pickle Deserialization RCE via ZMQ

Quick assessment

Affected
kvcache-ai ktransformers
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

kvcache-ai ktransformers是kvcache-ai的机器学习框架。 kvcache-ai KTransformers 0.6.3及之前版本存在反序列化注入漏洞，该漏洞源于未经验证的pickle反序列化漏洞，允许远程攻击者通过向绑定所有接口的SchedulerServer ZMQ ROUTER套接字发送特制的pickle有效载荷来执行任意命令，利用嵌入在特制pickle有效载荷中的恶意__reduce__方法来执行任意shell命令。

CVSS 9.8 · Critical EPSS 1.12% · P65

Affected Version Matrix 2

VendorProduct Version RangeStatus
kvcache-ai ktransformers ≤ 0.6.3 affected
def0f9313d6e063b5c5ccdfa1f6707f7a40dfdca unaffected
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I. Basic Information for CVE-2026-63767

Vulnerability Information
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Vulnerability Title
ktransformers Unauthenticated Pickle Deserialization RCE via ZMQ
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
kvcache-ai KTransformers 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
kvcache-ai ktransformers是kvcache-ai的机器学习框架。 kvcache-ai KTransformers 0.6.3及之前版本存在反序列化注入漏洞，该漏洞源于未经验证的pickle反序列化漏洞，允许远程攻击者通过向绑定所有接口的SchedulerServer ZMQ ROUTER套接字发送特制的pickle有效载荷来执行任意命令，利用嵌入在特制pickle有效载荷中的恶意__reduce__方法来执行任意shell命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
kvcache-ai ktransformers 0 ~ 0.6.3 -

II. Public POCs for CVE-2026-63767

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 5827 chars
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In-depth vulnerability mechanism
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-63767

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Patches & Fixes for CVE-2026-63767 (2)

Vendor Advisories for CVE-2026-63767 (1)

Proof of Concept for CVE-2026-63767 (1)

IV. Related Vulnerabilities

Same product: ktransformers
Same vendor: kvcache-ai
Same weakness: CWE-502

V. Comments for CVE-2026-63767

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