CVE-2026-85424CWE-306

CVE-2026-85424

Critical · published September 4, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
56.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00814 · 56.6th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-09-04T03:17Z
Affected products (1)
ProductVersionsFixed in
themoos/core-moos≤ 10.4.0—
References (5)
https://github.com/themoos/core-moos · [email protected]https://github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/DB/MOOSDB.cpp#L1163 · [email protected]https://github.com/themoos/core-moos/commit/5ff5cdec44242156a168cc1a545a6a21357bd3ac · [email protected]https://github.com/themoos/core-moos/pull/84 · [email protected]https://www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-missing-authentication-for-moosdb-publish-subscribe-and-db-clear · [email protected]
EPSS history
Timeline
  • 05 SEP 03:44Z
    EPSS moved — → 1%
    epss
  • 03 SEP 22:38Z
    MOOS core-moos through 10.4.0 Missing Authentication for MOOSDB Publish, Subscribe and DB_CLEAR
    cvelistv5