Use-after-free in NetX Duo - CVE-2026-102760
Published: November 9, 2026
Vulnerability identifier: #VU162955
CSH Severity: Medium
CVSS v4: 8.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-102760
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an unauthenticated remote attacker to crash a device running NetX Duo, causing denial of service.
The vulnerability exists due to a use-after-free in the NetX Secure TLS record send path when the non-default NX_SECURE_KEY_CLEAR option clears packets after TCP takes ownership. An unauthenticated remote attacker can trigger multi-packet TLS responses that corrupt memory if another thread reallocates freed packets before clearing completes.
Affected software
NetX Duo
How to mitigate CVE-2026-102760
Install security update from vendor's website.
NetX Duo - update to 6.5.2.202603