# CVE-2025-14543: RTI Connext Professional XXE in Core Libraries

Source: https://junglewise.ai/threats/cve-2025-14543-rti-connext-professional-xxe-in-core-libraries  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-30. Updated: 2026-06-17  
License: CC BY 4.0 with a link back

CVE-2025-14543 · Severity: critical · CVSS 9.1 · Published 2026-04-30

A vulnerability exists in the core libraries of RTI Connext Professional, a widely used middleware for real-time data distribution in industrial and critical infrastructure systems. An attacker could exploit this flaw to access sensitive data or cause a service outage by sending specially crafted messages. This could lead to unauthorized information disclosure or disruption of critical operations in environments relying on this communication framework.

Technologies: [Rti Connext Professional](https://junglewise.ai/threats/technologies/connext-professional). Vendors: [Rti](https://junglewise.ai/threats/vendors/rti).

## Quick answers

**Is CVE-2025-14543 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-14543 being exploited in the wild.

**How severe is CVE-2025-14543?** Critical severity, with a CVSS score of 9.1, published 30 April 2026.

**Which products and versions are affected?** Rti Connext Professional 4.3.0 to 5.2.3, 5.3.0 to 5.3.1.45, 6.0.0 to 6.0.1.40, 6.1.0 to 6.1.2.27, 7.0.0 to 7.3.1.0, 7.4.0 to 7.6.x.

**Is there a fix for CVE-2025-14543?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-14543 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2025-14543?** Check whether you run Rti Connext Professional at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An Improper Restriction of XML External Entity Reference (XXE) vulnerability (CWE-611) exists in the Core Libraries of RTI Connext Professional. The flaw occurs during the processing of serialized data, where the library fails to properly restrict external entity references. A remote, unauthenticated attacker can exploit this by sending malicious XML-based serialized data over the network. Successful exploitation can lead to the disclosure of sensitive local files, server-side request forgery (SSRF), or a denial-of-service (DoS) condition. The issue affects multiple versions across the 4.x, 5.x, 6.x, and 7.x release branches; users are advised to upgrade to the latest patched versions (e.g., 7.3.1.1 or 7.7.0) as specified in the vendor advisory.

## Affected products

- RTI Connext Professional (Core Libraries) 4.3.0 to 5.2.3, 5.3.0 to 5.3.1.45, 6.0.0 to 6.0.1.40, 6.1.0 to 6.1.2.27, 7.0.0 to 7.3.1.0, 7.4.0 to 7.6.x

## Timeline

- 2026-04-30: advisory: Initial publication of the vulnerability advisory.
- 2026-06-17: other: Advisory updated with enriched CPE and CVSS data.

## References

- [https://www.rti.com/vulnerabilities/](https://www.rti.com/vulnerabilities/)

## Related threats

- [RTI Connext Professional use-after-free in Security Plugins](https://junglewise.ai/threats/cve-2026-8849-use-after-free-vulnerability-in-rti-connext-professional-security)
- [RTI Connext Professional stack-based buffer overflow in core libraries](https://junglewise.ai/threats/cve-2026-7866-stack-based-buffer-overflow-vulnerability-in-rti-connext)
- [RTI Connext Professional out-of-bounds read in core libraries](https://junglewise.ai/threats/cve-2026-18626-out-of-bounds-read-vulnerability-in-rti-connext-professional-core)
- [RTI Connext Professional integer overflow in Core Libraries](https://junglewise.ai/threats/cve-2026-18462-integer-overflow-or-wraparound-improper-access-control)
- [RTI Connext Professional format string injection in Core Libraries](https://junglewise.ai/threats/cve-2026-18461-use-of-externally-controlled-format-string-vulnerability-in-rti)