CVE-2026-102759NetX Secure TLS accepts an empty application-data record without verifying its message authentication code.
Updated under an hour ago ()
Does this affect you?
It affects Eclipse Foundation NetX Duo. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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NetX Secure TLS accepts an empty application-data record without verifying its message authentication code. In `_nx_secure_verify_mac`, a decrypted application record whose length equals the negotiated MAC size is treated as valid and returns success after advancing the receive sequence number. The received MAC is never generated or compared. Empty TLS application-data records are legal, and are commonly emitted by TLS 1.0 implementations as a BEAST mitigation.
- CVSS
- 6.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-354
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- eclipse
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 29, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Eclipse Foundation NetX Duo eclipse_foundation:netx_duo (from the name) | from 6.2.0 through 6.5.1.202602; 6.5.2.202603 not affected | CNA record |
References
- https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-m7j3-vh25-xc8p
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.