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CVE-2026-85425 — MOOS-IvP iSay through 24.8.1 contains a remote code execution vulnerability in the…

Key facts

CVE-2026-85425 is a Critical (9.8) vulnerability: MOOS-IvP iSay through 24.8.1 contains a remote code execution vulnerability in the…. This entry ships a detection-only PoC and a Docker test lab.
CVE CVE-2026-85425
Severity Critical (9.8)
Detection / prevention —
PoC poc.py
Source 2026/CVE-2026-85425/

Details

English | 한국어

Description

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.

Vulnerability Details

Property Value
CVE ID CVE-2026-85425
Type RCE
CVSS Score 9.8

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-85425/poc.py

Usage

# Run PoC against target
python3 poc.py --target <TARGET_URL>

# With authentication
python3 poc.py --target <TARGET_URL> --username <USER> --password <PASS>

⚠️ Warning: This PoC is for authorized security testing only. It uses detection-only techniques and does not exploit or damage target systems.

Test Lab

This repository includes a Docker-based test environment with both vulnerable and patched applications.

Quick Start

# Clone and navigate to CVE directory
cd CVE-2026-85425

# Start both applications
docker-compose up -d

# Run tests
./run-tests.sh    # Linux/Mac
./run-tests.ps1   # Windows PowerShell

Application Endpoints

Application URL Status
Vulnerable App http://localhost:8080 Shows vulnerability
Patched App http://localhost:8081 Demonstrates fix

Directory Structure

├── README.md           # English documentation
├── README_KO.md        # Korean documentation
├── poc.py              # PoC detection script
├── docker-compose.yml  # Container orchestration
├── run-tests.sh        # Linux/Mac test runner
├── run-tests.ps1       # Windows test runner
├── vulnerable-app/     # Vulnerable version
│   ├── app.py
│   ├── Dockerfile
│   └── requirements.txt
└── patched-app/        # Fixed version
    ├── app.py
    ├── Dockerfile
    └── requirements.txt

References

  • https://github.com/moos-ivp/moos-ivp
  • https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/iSay/Sayer.cpp#L416
  • https://github.com/moos-ivp/moos-ivp/commit/ed3a44131fd3e5528602f20adc37ba82273c1cd8
  • https://github.com/moos-ivp/moos-ivp/pull/120
  • https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-isay-command-injection-via-say-moos

Generated by PoC Generator on 2026-09-04T10:35:51.327457087

Frequently asked questions

What is CVE-2026-85425?

CVE-2026-85425 is a Critical (9.8) vulnerability: MOOS-IvP iSay through 24.8.1 contains a remote code execution vulnerability in the…. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-85425?

Run the detection-only PoC included with this entry against your Docker test lab to confirm whether a target is affected; pair it with your own IDS logging.

How do I block or mitigate CVE-2026-85425?

Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.

For authorized security testing and research only. See the full source and NVD record.