CVE-2025-15063: Ollama MCP Server execAsync Command Injection Remote Code Execution Vulnerability

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-01-23 · updated 2026-06-17
Weakness: CWE-78

Description

Ollama MCP Server execAsync Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ollama MCP Server. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of the execAsync method. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-27683.

Affected products

Ollama MCP Server: 80cf2e17cfc144963a475b619093a2d13c13dbc9

References

https://www.zerodayinitiative.com/advisories/ZDI-26-020/

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