CVE•Published 2026-04-01•Modified 2026-09-22•1 article on news•5 live references•NVD data
CVE-2026-4374Rti · Connext_professional
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS percentile
15
Exploit Prediction Scoring System · top 85% of all CVEs
Weaknesses (CWE)
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.*.
Timeline
Published 2026-04-01
Modified 2026-09-22
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-4374Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Rti Connext Professional"All exposed Rti Connext Professional instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Connext Professional"HTTP body or banner mentions "Connext Professional" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-4374Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-4374Censys host search filtered to this CVE id.
grep.app
CVE-2026-4374Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-4374GitHub code search for direct mentions.
Google dork
"CVE-2026-4374" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.