# CVE-2026-8849: RTI Connext Professional use-after-free in Security Plugins

Source: https://junglewise.ai/threats/cve-2026-8849-use-after-free-vulnerability-in-rti-connext-professional-security  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-22. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-8849 · Severity: info · Published 2026-09-22

RTI Connext Professional is middleware software that enables real-time communication between distributed systems in industrial and enterprise environments. A use-after-free vulnerability in its Security Plugins component could allow an attacker to manipulate files or cause system instability in applications relying on this software.

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

## Quick answers

**Is CVE-2026-8849 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8849 being exploited in the wild.

**How severe is CVE-2026-8849?** Informational severity, published 22 September 2026.

**Which products and versions are affected?** Rti Connext Professional 7.6.0 to 7.7.0.0.

**Is there a fix for CVE-2026-8849?** 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.

**Am I affected by CVE-2026-8849?** 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 use-after-free vulnerability exists in RTI Connext Professional versions 7.6.0 through 7.7.0.0 within the Security Plugins component. The flaw allows file manipulation through memory reuse after the vulnerable object is freed. The vulnerability is rated informational severity and affects the security plugin initialization or file handling mechanisms.

## Affected products

- RTI Connext Professional 7.6.0 to 7.7.0.0

## Timeline

- 2026-09-22: disclosed

## References

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

## Related threats

- [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)
- [RTI Connext Professional off-by-one error in core libraries](https://junglewise.ai/threats/cve-2026-18460-off-by-one-error-out-of-bounds-write-vulnerability-in-rti-connext)