CVE-2026-85424
CVE-2026-85424
MOOS core-moos through 10.4.0 lacks authentication in the wire protocol, allowing unauthenticated clients to connect with full publish, subscribe, and database clear privileges. Attackers can bypass the compile-time protocol string check and connect with arbitrary client names to execute privileged operations including DB_CLEAR which resets all variables and clears client mail queues.
Vulnerability class: Broken Authentication
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-85424?
- CVE-2026-85424 is a critical-severity vulnerability, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-09-03.
- How severe is CVE-2026-85424?
- Critical severity. CVSS v3 base score is 9.8 out of 10.