---
id: CVE-2026-85425
title: >-
  MOOS-IvP iSay through 24.8.1 contains a remote code execution vulnerability in
  the SAY_MOOS variable handler that passes unsanitized text to a shell command
summary: >-
  MOOS-IvP iSay through 24.8.1 contains a remote code execution vulnerability in
  the SAY_MOOS variable handler that passes unsanitized text to a shell command.
  Attackers can publish SAY_MOOS messages containing backticks or command
  substit…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
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-2026-85425'
references:
  - url: 'https://github.com/moos-ivp/moos-ivp'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/iSay/Sayer.cpp#L416
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/moos-ivp/moos-ivp/commit/ed3a44131fd3e5528602f20adc37ba82273c1cd8
    label: disclosure@vulncheck.com
  - url: 'https://github.com/moos-ivp/moos-ivp/pull/120'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-isay-command-injection-via-say-moos
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.01439
epssPercentile: 0.72051
ingestedAt: '2026-09-08T20:10:03.161Z'
---

## Overview

MOOS-IvP iSay through 24.8.1 contains a remote code execution vulnerability in the SAY_MOOS variable handler that passes unsanitized text to a shell command. Attackers can publish SAY_MOOS messages containing backticks or command substitution syntax to execute arbitrary commands as the iSay process user.

## Remediation

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