CVE-2025-14946

MediumCVSS 4.8

Published: 19/12/2025(UTC)Updated: 05/11/2026(UTC)Translated: 01/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.14%

4th percentile - higher than 4% of all known CVEs

Summary

A flaw was found in libnbd. A malicious actor could exploit this by convincing libnbd to open a specially crafted URI. This vulnerability arises because non-standard hostnames starting with '-o' are incorrectly interpreted as arguments to the SSH process, rather than as hostnames. This could lead to arbitrary code execution with the privileges of the user running libnbd.

Risk Assessment

The risk is that an attacker can achieve remote code execution if a user opens a malicious URI. This could lead to system compromise, data theft, or further attacks.

Recommendation

Update the libnbd library to a patched version. Also educate users about the risk of opening unknown URIs and apply the principle of least privilege.

Other vulnerabilities in libnbd

CVE-2023-5871Medium
A flaw was found in libnbd, due to a malicious Network Block Device (NBD), a protocol for accessing Block Devices such as hard disks over a Network. This issue may allow a malicious NBD server to cause a Denial of Service.

Original NVD description (English source)

A flaw was found in libnbd. A malicious actor could exploit this by convincing libnbd to open a specially crafted Uniform Resource Identifier (URI). This vulnerability arises because non-standard hostnames starting with '-o' are incorrectly interpreted as arguments to the Secure Shell (SSH) process, rather than as hostnames. This could lead to arbitrary code execution with the privileges of the user running libnbd.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS