What’s Vulnerable › Vulnerabilities

CVE-2025-34095: Mako Server v2.5 and v2.6 OS Command Injection via examples/save.lsp

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-10 · updated 2026-06-17
• Weakness: CWE-78

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.

Affected products

• Real Time Logic Mako Server: from 2.5 through 2.6

References

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

Get alerted when CVE-2025-34095 or the next vulnerability affects your stack