# CVE-2026-85451 — themoos core-moos

> As of 2026-09-04, CVE-2026-85451 is a HIGH-severity vulnerability in themoos core-moos, CVSS v3.1 7.1, EPSS 0.2% (12.8th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-85451 as of 2026-09-04; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-04

## What is CVE-2026-85451?

MOOS core-moos through 10.4.0 contains a remote process termination vulnerability in the SuicidalSleeper component that uses a hard-coded passphrase for multicast command authorization. Any multicast-reachable peer can enumerate MOOS processes and send termination commands to trigger process shutdown by exploiting the default multicast group and port with the known passphrase.

The record classifies CVE-2026-85451 under weakness class [CWE-798](https://intel.threadlinqs.com/cwe/CWE-798). Its CVSS v3 base vector states that the flaw is reachable from an adjacent network, needs no prior authentication, needs no user interaction, and has high impact on availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 32 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.1 — HIGH (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H`)
- **CVSS v4.0 base score:** 7.1 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 12.8% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-03, last modified 2026-09-04

## Is CVE-2026-85451 being exploited?

It currently carries a trending score of 33 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [themoos](https://intel.threadlinqs.com/vendors/themoos): core-moos

## How to fix CVE-2026-85451

No vendor patch reference has been recorded for CVE-2026-85451 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-85451

No threat campaign in the Threadlinqs corpus currently references CVE-2026-85451, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, GitHub Security Advisories, FIRST EPSS. Last verified by Threadlinqs on 2026-09-05. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — issue tracking](https://github.com/themoos/core-moos/pull/85)
- [github.com — patch](https://github.com/themoos/core-moos/commit/488806a07db9f21eea124f48a9c0392f058f01dc)

**Technical analysis**

- [github.com — technical description](https://github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/Comms/SuicidalSleeper.cpp#L45)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-remote-process-termination-via-hard-coded-multicast-passphrase)

**Issue tracking and product pages**

- [github.com — product](https://github.com/themoos/core-moos)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-85451
Full detection coverage and IOCs for threats exploiting CVE-2026-85451 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp