CVE-2026-103416CWE-787

CVE-2026-103416

published October 7, 2026

CVSS
9.3
EPSS
0%
Percentile
10.6
In the wild
Unconfirmed
What it is

Out-of-bounds write via the TLS 1.3 handshake message cache in NetX Duo in Eclipse ThreadX NetX Duo 6.5.1.202602 allows a handshake message larger than the cache writes past it and on into the rest of the session control block, which holds pointers. A malicious or compromised server can make a TLS 1.3 client produce such a message before certificate authentication completes, so no server certificate is needed to reach it.

The record
Technical detail
CVSS
9.3 · NONE
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00209 · 10.6th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-10-07T13:17Z
References (2)
https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-4x76-j955-qhq2 · [email protected]https://gitlab.eclipse.org/security/cve-assignment/-/work_items/356 · [email protected]
EPSS history
Timeline
  • 08 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 07 OCT 08:55Z
    Out-of-bounds write via the TLS 1.3 handshake message cache in NetX Duo in Eclipse ThreadX NetX Duo 6.5.1.202602 allows a handshake message larger than the…
    cvelistv5