Vulnerability details

CVE-2025-34095

Real Time Logic Mako Server

Mako Server v2.5 and v2.6 OS Command Injection via examples/save.lsp

CVSS 4.0

9.3Critical

Official description

An OS command injection vulnerability exists in Mako Server versions 2.5 and 2.6, specifically within the tutorial interface provided by the examples/save.lsp endpoint. An unauthenticated attacker can send a crafted PUT request containing arbitrary Lua os.execute() code, which is then persisted on disk and triggered via a subsequent GET request to examples/manage.lsp. This allows remote command execution on the underlying operating system, impacting both Windows and Unix-based deployments.

CVSS scores

Score	Version	Source	Vector
9.3Critical	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`

Affected products

Vendor	Product	Versions	Source
Real Time Logic	Mako Server	2.5 ≤ v ≤ 2.6	CVEProject cvelistV5 (CNA)

References and advisories

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/multi/http/makoserver_cmd_exec.rb exploit
https://www.exploit-db.com/exploits/43132 exploit
https://vulncheck/advisories/mako-server-rce third-party-advisory

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Details

Published: 2025-07-10
Last updated: 2026-05-14
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

6.21%

Probability of exploitation in 30 days

93.5%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')