CVE-2025-15063

CriticalRCE

Published: 23 January 2026

Published

23 January 2026

Modified

15 April 2026

KEV Added

—

Patch

—

CVSS Score v3 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0211 79.4th percentile

Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2025-15063 is a critical-severity OS Command Injection (CWE-78) vulnerability in Zerodayinitiative (inferred from references). Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 20.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

This vulnerability is AI-related — categorised as NLP and Transformers; in the Supply Chain and Deployment risk domain.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and AC-3 (Access Enforcement).

Deeper analysis

CVE-2025-15063 is a command injection vulnerability in the execAsync method of Ollama MCP Server. The flaw stems from insufficient validation of user-supplied input before it is passed to a system call, enabling arbitrary command execution. It carries a CVSS score of 9.8 and is tracked under CWE-78.

Unauthenticated remote attackers can exploit the issue over the network to run arbitrary code in the context of the service account without any user interaction or privileges.

The vulnerability was reported as ZDI-CAN-27683 and is covered by the Zero Day Initiative advisory ZDI-26-020.

EPSS for the CVE rose from a low starting value to a recorded peak of 0.0127, indicating that exploitation interest emerged after disclosure.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-4484

Vulnerability details

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.