Vulnerability Details CVE-2026-4374
Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Cloud Discovery Service, Recording Service, Routing Service, Queueing Service, Observability Collector) allows Serialized Data External Linking, Data Serialization External Entities Blowup.<p>This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.1.0 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.*.</p>
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 14.3%
CVSS Severity
CVSS v3 Score 9.1
Products affected by CVE-2026-4374
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cpe:2.3:a:rti:connext_professional:5.3.0
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cpe:2.3:a:rti:connext_professional:5.3.1.40
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cpe:2.3:a:rti:connext_professional:5.3.1.41
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cpe:2.3:a:rti:connext_professional:5.3.1.44
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cpe:2.3:a:rti:connext_professional:5.3.1.45
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cpe:2.3:a:rti:connext_professional:6.0.0
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cpe:2.3:a:rti:connext_professional:6.0.1.25
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cpe:2.3:a:rti:connext_professional:6.0.1.35
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cpe:2.3:a:rti:connext_professional:6.0.1.40
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cpe:2.3:a:rti:connext_professional:6.1.0
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cpe:2.3:a:rti:connext_professional:6.1.1
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cpe:2.3:a:rti:connext_professional:6.1.1.2
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cpe:2.3:a:rti:connext_professional:6.1.2.17
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cpe:2.3:a:rti:connext_professional:6.1.2.19
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cpe:2.3:a:rti:connext_professional:6.1.2.21
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cpe:2.3:a:rti:connext_professional:6.1.2.23
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cpe:2.3:a:rti:connext_professional:6.1.2.26
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cpe:2.3:a:rti:connext_professional:6.1.2.27
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cpe:2.3:a:rti:connext_professional:7.0.0
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cpe:2.3:a:rti:connext_professional:7.1.0
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cpe:2.3:a:rti:connext_professional:7.2.0
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cpe:2.3:a:rti:connext_professional:7.3.0
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cpe:2.3:a:rti:connext_professional:7.3.0.10
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cpe:2.3:a:rti:connext_professional:7.3.0.2
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cpe:2.3:a:rti:connext_professional:7.3.0.5
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cpe:2.3:a:rti:connext_professional:7.3.0.7
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cpe:2.3:a:rti:connext_professional:7.3.0.8
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cpe:2.3:a:rti:connext_professional:7.3.0.9
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cpe:2.3:a:rti:connext_professional:7.4.0
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cpe:2.3:a:rti:connext_professional:7.5.0
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cpe:2.3:a:rti:connext_professional:7.6.0