Quick answers
- Is CVE-2026-18457 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18457 being exploited in the wild.
- How severe is CVE-2026-18457?
- Informational severity, published 22 September 2026.
- Which products and versions are affected?
- Rti Connext Professional 5.2.3 before 5.2.*, 5.3.0 before 5.3.*, 6.0.0 before 6.0.*, 6.1.0 before 6.1.*, 7.0.0 before 7.3.1.6, 7.4.0 before 7.7.0.1.
- Is there a fix for CVE-2026-18457?
- 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-2026-18457 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-18457?
- 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 heap-based buffer overflow vulnerability exists in RTI Connext Professional's Core Libraries component. The vulnerability can be triggered via network attack vectors and affects multiple version branches (5.2.3–5.2.*, 5.3.0–5.3.*, 6.0.0–6.0.*, 6.1.0–6.1.*, 7.0.0–7.3.1.6, and 7.4.0–7.7.0.1). Successful exploitation may result in memory corruption, denial of service, or remote code execution depending on attack context and memory layout.
Affected products
- RTI Connext Professional 5.2.3 before 5.2.*, 5.3.0 before 5.3.*, 6.0.0 before 6.0.*, 6.1.0 before 6.1.*, 7.0.0 before 7.3.1.6, 7.4.0 before 7.7.0.1
Timeline
- 2026-09-22: disclosed