OS Command Injection Vulnerability in Mako Server by Mako
CVE-2025-34095

9.3CRITICAL

Key Information:

Vendor

Real Time Logic

Status
Mako Server
Vendor
CVE Published:
10 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-34095?

An OS command injection vulnerability has been identified in Mako Server, specifically within its tutorial interface at the examples/save.lsp endpoint. This flaw allows unauthenticated attackers to execute arbitrary Lua os.execute() commands. By sending a specially crafted PUT request, malicious inputs can be stored on the server. These inputs can later be activated through a GET request to examples/manage.lsp, leading to unauthorized remote command execution on both Windows and Unix-based systems, which poses a significant risk to the integrity and security of the affected deployments.

Affected Version(s)

Mako Server 2.5 <= 2.6

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-34095 - Proof of Concept

CVE-2025-34095 - Proof of Concept

References

https://raw.githubusercontent.com/rapid7/metasploit-frame...
exploit
https://www.exploit-db.com/exploits/43132
exploit
https://vulncheck/advisories/mako-server-rce
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

John Page (hyp3rlinx) of Beyond Security SecuriTeam Secure Disclosure
.