Real Time Logic Mako Server up to 2.6 Tutorial Interface examples/save.lsp execute os command injection

Summaryinfo

A vulnerability described as critical has been identified in Real Time Logic Mako Server up to 2.6. The impacted element is the function execute of the file examples/save.lsp of the component Tutorial Interface. Executing a manipulation can lead to os command injection. This vulnerability appears as CVE-2025-34095. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability has been found in Real Time Logic Mako Server up to 2.6 and classified as very critical. This vulnerability affects the function execute of the file examples/save.lsp of the component Tutorial Interface. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was presented by John Page. The advisory is shared for download at raw.githubusercontent.com. This vulnerability was named CVE-2025-34095 since 04/15/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/11/2025). The MITRE ATT&CK project declares the attack technique as T1202.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21031). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Real Time Logic

Name

• Mako Server

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6

CPE 2.3info

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CPE 2.2info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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