PatchTheCVECVE-2026-85424: MOOS core-moos through 10.4.0 lacks authentication in the wire protocol, allowing unauthenticated clients to c
CVE-2026-85424 is a critical-severity flaw (CVSS 9.8) affecting core-moos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.8% (top 43%) |
| CISA exploited list | No |
| Weakness | CWE-306 |
| Published | 2026-09-03 |
| Last modified | 2026-10-14 |
Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-85424?
core-moos: upgrade to newer than 10.4.0. Exact commands for each OS are on this page.
Is CVE-2026-85424 being exploited?
CVE-2026-85424 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-85424 affect?
CVE-2026-85424 affects core-moos. Severity is critical (CVSS 9.8). 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 an
How urgent is CVE-2026-85424?
Priority 53/100. Critical severity; Remotely exploitable, no login, no user action
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