# CVE-2026-2394: RTI Connext Professional buffer over-read in Core Libraries

Source: https://junglewise.ai/threats/cve-2026-2394-rti-connext-professional-buffer-over-read-in-core-libraries  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-01. Updated: 2026-06-17  
License: CC BY 4.0 with a link back

CVE-2026-2394 · Severity: medium · CVSS 6.5 · Published 2026-04-01

RTI Connext Professional is a connectivity framework used in industrial and mission-critical systems to manage real-time data exchange. A security flaw in its core libraries could allow an attacker to read more data than intended from the system's memory. This could lead to the exposure of sensitive information or cause the software to crash, potentially disrupting critical operations.

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

## Quick answers

**Is CVE-2026-2394 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-2394 being exploited in the wild.

**How severe is CVE-2026-2394?** Medium severity, with a CVSS score of 6.5, published 1 April 2026.

**Which products and versions are affected?** Rti Connext Professional 7.4.0 before 7.7.0, 7.0.0 before 7.3.1.1, 6.1.0 before 6.1.2.34, 6.0.0 before 6.0.*, 5.3.0 before 5.3.*, 4.3x before 5.2.*.

**Is there a fix for CVE-2026-2394?** 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-2026-2394 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-2394?** 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

A buffer over-read vulnerability (CWE-125/CWE-126) exists in the Core Libraries of RTI Connext Professional. The flaw occurs when the software reads data past the end of the intended buffer, which can be triggered by a remote attacker over the network without authentication. Successful exploitation can result in the disclosure of sensitive information from memory or a partial 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 respective patched versions (e.g., 7.7.0, 7.3.1.1, or 6.1.2.34) as specified in the vendor advisory.

## Affected products

- RTI Connext Professional (Core Libraries) 7.4.0 before 7.7.0, 7.0.0 before 7.3.1.1, 6.1.0 before 6.1.2.34, 6.0.0 before 6.0.*, 5.3.0 before 5.3.*, 4.3x before 5.2.*

## Timeline

- 2026-04-01: disclosed
- 2026-04-01: advisory
- 2026-06-17: other: Advisory updated with refined version ranges.

## 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)