{"id":"CVE-2026-102759","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102759","generatedAt":"2026-10-28T01:52:06.960Z","title":"NetX Secure TLS accepts an empty application-data record without verifying its message authentication code.","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.\n\n\n\nEmpty TLS application-data records are legal, and are commonly emitted by TLS 1.0 implementations as a BEAST mitigation.","published":"2026-09-29T18:17:13.000Z","lastModified":"2026-09-29T22:17:08.000Z","status":"Awaiting Analysis","sourceIdentifier":"emo@eclipse.org","cvss":{"version":"4.0","score":6.3,"severity":"MEDIUM","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-354"],"affected":[],"epss":{"score":0.00156,"percentile":0.04745,"date":"2026-10-26","history":[{"date":"2026-09-30","score":0.00156,"percentile":0.04147}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-29T18:17:13.000Z","detail":{"score":"6.3","severity":"MEDIUM","publishedAt":"2026-09-29T18:17:13.177Z"},"summary":"New CVE, medium severity (CVSS 6.3)."}],"references":[{"url":"https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-m7j3-vh25-xc8p","source":"emo@eclipse.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102759","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}