High severity · published Sep 29, 2026
CVE-2026-102728
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
7.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ND
NetX Duo · Eclipse Foundation
through 6.5.1.202602 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-102728
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-102728
github.com
https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-4q67-8385-j6m5
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