CVE-2026-102759GHSA-m7j3-vh25-xc8p
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 negotiate
Eclipse Foundation NetX Duo
CVSS
6.3MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.16%Chance of exploitation activity in the next 30 days, higher than 4% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
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.
Text from CVE List
Affected versions 2
- NetX Duoaffected: 6.2.0 through 6.5.1.202602CVE List
- NetX Duounaffected: 6.5.2.202603CVE List