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CVE-2026-4374— Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Recording Service,Routing Service,Queueing Service,Cloud Discovery Service,Observability Collector) allows Serialized Data External Linking, Data Serializat...

Quick assessment

Affected
RTI Connext Professional
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RTI Connext Professional是美国RTI公司的一个专为满足工业物联网 (IIoT) 的苛刻要求而设计的连接平台。 RTI Connext Professional存在安全漏洞，该漏洞源于XML外部实体引用限制不当，可能导致序列化数据外部链接。

CVSS 7.0 · High EPSS 0.39% · P31

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 5

VendorProduct Version RangeStatus
RTI Connext Professional 7.4.0< 7.7.0 affected
7.0.0< 7.3.1.1 affected
6.1.0< 6.1.2.34 affected
6.0.0< 6.0.* affected
5.3.0< 5.3.* affected
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I. Basic Information for CVE-2026-4374

Vulnerability Information
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Vulnerability Title
Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Recording Service,Routing Service,Queueing Service,Cloud Discovery Service,Observability Collector) allows Serialized Data External Linking, Data Serializat...
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Recording Service,Routing Service,Queueing Service,Cloud Discovery Service,Observability Collector) allows Serialized Data External Linking, Data Serialization External Entities Blowup. This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.0.0 before 7.3.1.1, from 6.1.0 before 6.1.2.34, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Source: CVE Program / CVE List V5
Vulnerability Title
RTI Connext Professional 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RTI Connext Professional是美国RTI公司的一个专为满足工业物联网 (IIoT) 的苛刻要求而设计的连接平台。 RTI Connext Professional存在安全漏洞，该漏洞源于XML外部实体引用限制不当，可能导致序列化数据外部链接。
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
RTI Connext Professional 7.4.0 ~ 7.7.0 -

II. Public POCs for CVE-2026-4374

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III. Intelligence Information for CVE-2026-4374

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IV. Related Vulnerabilities

Same product: Connext Professional
Same vendor: RTI
Same weakness: CWE-611

V. Comments for CVE-2026-4374

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