CVE-2025-34095

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

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.

Category

9.3
CVSS
Severity: Critical
CVSS 4.0 •
EPSS 0.61%
Third-Party Advisory vulncheck
Affected: Real Time Logic Mako Server
Published at:
Updated at:

References

Link Tags
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

Frequently Asked Questions

What is the severity of CVE-2025-34095?
CVE-2025-34095 has been scored as a critical severity vulnerability.
How to fix CVE-2025-34095?
To fix CVE-2025-34095, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-34095 being actively exploited in the wild?
It is possible that CVE-2025-34095 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-34095?
CVE-2025-34095 affects Real Time Logic Mako Server.
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