Quick answers
- Is CVE-2026-102714 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-102714 being exploited in the wild.
- How severe is CVE-2026-102714?
- Informational severity, published 29 September 2026.
- Which products and versions are affected?
- Microsoft NetX.
- Is there a fix for CVE-2026-102714?
- 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-2026-102714 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-102714?
- Check whether you run Microsoft NetX. 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 `_nx_icmpv6_validate_options()` function in the IPv6 stack fails to validate trailing bytes (1–2 byte residues) in ICMPv6 option areas, allowing malformed options to pass validation. Downstream handlers then re-parse the same area without bounds checking, leading to three exploitation modes: infinite loops when option length fields are zero (network vector, no auth required), integer underflow causing out-of-bounds reads past the packet buffer, and unvalidated link-layer address options copied into the neighbor cache that may leak or corrupt adjacent memory.
Affected products
- Microsoft NetX
Timeline
- 2026-09-29: disclosed