CVE-2026-102728 Memory corruption in NetX Duo
A malicious server can trigger out-of-bounds reads in NetX Duo TLS/DTLS clients, potentially causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102728?
CVE-2026-102728 is a high-severity memory corruption vulnerability in Eclipse Foundation NetX Duo, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Two client-side TLS/DTLS handshake parsers in NetX Secure read fields from a server-supplied message before validating that the message is long enough to contain them. Both are bounded out-of-bounds reads on a remotely reachable path, both are reached from a TLS or DTLS client connecting to a malicious or malformed server, and both have the same shape: the bounds check exists and returns the correct status, but it runs after the read it is meant to guard.
Weakness: CWE-126
Which versions are affected by CVE-2026-102728?
How do I fix CVE-2026-102728?
No fix has been published for CVE-2026-102728 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-102728 being exploited?
There is no known exploitation of CVE-2026-102728 in the wild and no public exploit code.
Sources
Also known as GHSA-4q67-8385-j6m5, GHSA-rqmh-m9w6-hv3m.