# CVE-2026-30802: RTI Connext Micro out-of-bounds read in Core Libraries

Source: https://junglewise.ai/threats/cve-2026-30802-rti-connext-micro-out-of-bounds-read-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-2026-30802 · Severity: info · CVSS 8.8 · Published 2026-06-17

A security vulnerability exists in the core libraries of RTI Connext Micro, a communication framework used in embedded and resource-constrained systems. An attacker could exploit this flaw to cause a system crash or service disruption by sending specially crafted data. This could lead to a loss of availability for critical real-time applications relying on this software for data distribution.

Vendors: [Rti](https://junglewise.ai/threats/vendors/rti).

## Quick answers

**Is CVE-2026-30802 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-30802 being exploited in the wild.

**How severe is CVE-2026-30802?** Informational severity, with a CVSS score of 8.8, published 17 June 2026.

**Which products and versions are affected?** Rti Connext Micro (Core Libraries) 4.0.0 before 4.3.0.

**Is there a fix for CVE-2026-30802?** 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-2026-30802 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-30802?** Check whether you run Rti Connext Micro (Core Libraries) 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 out-of-bounds read vulnerability (CWE-125) exists in the Core Libraries of RTI Connext Micro versions 4.0.0 through 4.2.x. The flaw is triggered when the software processes malformed input, leading to a buffer overread. An unauthenticated attacker can exploit this over the network without user interaction. According to the vendor's CVSS 4.0 assessment, the primary impact is high availability loss (VA:H), likely resulting in a crash of the affected process. The vulnerability is addressed in version 4.3.0.

## Affected products

- RTI Connext Micro (Core Libraries) 4.0.0 before 4.3.0

## Timeline

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

## References

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

## Related threats

- [RTI Connext Micro integer underflow in Core Libraries](https://junglewise.ai/threats/cve-2026-30803-rti-connext-micro-integer-underflow-in-core-libraries)