Quick answers
- Is CVE-2026-102719 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-102719 being exploited in the wild.
- How severe is CVE-2026-102719?
- Informational severity, published 29 September 2026.
- Which products and versions are affected?
- Eclipse ThreadX NetX Secure.
- Is there a fix for CVE-2026-102719?
- 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-2026-102719 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-102719?
- Check whether you run Eclipse ThreadX NetX Secure. 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
The vulnerability exists in DTLS HelloVerifyRequest cookie generation within NetX Secure, where the cookie values are predictable rather than cryptographically random. An attacker with network access can predict valid cookies, enabling forged DTLS messages and potential man-in-the-middle attacks during the handshake phase. The issue affects the initial key exchange and session establishment.
Affected products
- Eclipse ThreadX NetX Secure
Timeline
- 2026-09-29: disclosed