---
id: CVE-2026-85455
title: >-
  MOOS core-moos through 10.4.0 contains a buffer over-read vulnerability in
  CMOOSCommPkt where a four-byte packet triggers out-of-bounds memory access
  during deserialization
summary: >-
  MOOS core-moos through 10.4.0 contains a buffer over-read vulnerability in
  CMOOSCommPkt where a four-byte packet triggers out-of-bounds memory access
  during deserialization. Attackers can open a TCP connection to the MOOSDB port
  and send…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H'
cwe:
  - CWE-125
published: '2026-09-03'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:07:17.943'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85455'
references:
  - url: 'https://github.com/themoos/core-moos'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/Comms/MOOSCommPkt.cpp#L228
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/themoos/core-moos/commit/d30c14585753f9ae39749d9628ed15c8383f0568
    label: disclosure@vulncheck.com
  - url: 'https://github.com/themoos/core-moos/pull/75'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-moosdb-out-of-bounds-read-via-short-packet
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00361
epssPercentile: 0.29832
ingestedAt: '2026-09-08T20:10:03.162Z'
---

## Overview

MOOS core-moos through 10.4.0 contains a buffer over-read vulnerability in CMOOSCommPkt where a four-byte packet triggers out-of-bounds memory access during deserialization. Attackers can open a TCP connection to the MOOSDB port and send a crafted short packet to read memory before authentication.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.