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.
Published: 2026-09-29
Score: 6.3 Medium
EPSS: n/a
KEV: No
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Remediation

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History

Tue, 29 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-354
References
Metrics cvssV4_0

{'score': 6.3, 'vector': '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'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published:

Updated: 2026-09-29T17:28:04.461Z

Reserved: 2026-09-29T16:21:58.818Z

Link: CVE-2026-102759

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-29T18:17:13.177

Modified: 2026-09-29T19:00:16.623

Link: CVE-2026-102759

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses