CVE-2026-4374 — CRITICAL (9.1)

Q: How severe is CVE-2026-4374?

CVE-2026-4374 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-4374?

Check the references section above for vendor advisories and patch information. Affected products include: Rti Connext Professional.

Vulnerability Description

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

CVSS Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Rti	Connext Professional	>= 5.3.0, <= 5.3.1.45

Related Weaknesses (CWE)

CWE-611

References

https://www.rti.com/vulnerabilities/#cve-2026-4374Vendor Advisory

FAQ

What is CVE-2026-4374?

CVE-2026-4374 is a vulnerability with a CVSS score of 9.1 (CRITICAL). Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Routing Service,Observability Collector,Recording Service,Queueing Service,Cloud Discovery Service) all...

How severe is CVE-2026-4374?

CVE-2026-4374 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-4374?

Check the references section above for vendor advisories and patch information. Affected products include: Rti Connext Professional.