# CVE-2026-2674: RTI Connext Professional out-of-bounds write in Core Libraries

Source: https://junglewise.ai/threats/cve-2026-2674-rti-connext-professional-out-of-bounds-write-in-core-libraries  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-17. Updated: 2026-06-20  
License: CC BY 4.0 with a link back

CVE-2026-2674 · Severity: info · CVSS 4.8 · Published 2026-06-17

RTI Connext Professional, a software framework used for real-time data distribution in industrial and mission-critical systems, contains a flaw in how it handles data buffers. A local attacker with basic user access could exploit this to cause a system crash or potentially modify data, impacting the reliability and integrity of the communication services. This affects the Queueing, Core Libraries, and Persistence services within the suite.

## Quick answers

**Is CVE-2026-2674 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-2674 being exploited in the wild.

**How severe is CVE-2026-2674?** Informational severity, with a CVSS score of 4.8, published 17 June 2026.

**Which products and versions are affected?** RTI Connext Professional 7.4.0 before 7.7.0, 7.0.0 before 7.3.1.3, 6.1.0 before 6.1.*.

**Is there a fix for CVE-2026-2674?** 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-2026-2674 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-2674?** Check whether anything you run is named in the advisory. 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 out-of-bounds write vulnerability (CWE-787) exists in RTI Connext Professional within the Queueing Service, Core Libraries, and Persistence Service. The flaw allows for buffer overflows when processing specific data. According to the CVSS:4.0 vector, the attack vector is local (AV:L) and requires low privileges (PR:L) with no user interaction. Successful exploitation can lead to a partial loss of integrity and availability (VI:L/VA:L) by allowing an attacker to write data past the end of an intended buffer. Affected versions include the 7.4.x, 7.0.x, and 6.1.x branches; users should update to versions 7.7.0, 7.3.1.3, or the latest 6.1.x patch respectively.

## Affected products

- RTI Connext Professional 7.4.0 before 7.7.0, 7.0.0 before 7.3.1.3, 6.1.0 before 6.1.*

## Timeline

- 2026-06-17: disclosed
- 2026-06-17: advisory

## References

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