Vulnerability · Published Jan 23, 2026 · Assigned by zdi

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

Critical 9.8

In plain English

A critical-severity OS command injection in Ollama MCP Server from Ollama MCP Server. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities).

Severity (CVSS 3.0)9.8Critical

Exploit odds (30 days)1.9%top 19.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
Ollama MCP Server	Ollama MCP Server	80cf2e17cfc144963a475b619093a2d13c13dbc9

Weakness: CWE-78 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ZDI-26-020 x_research-advisory