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CVE-2025-14946

Libnbd: libnbd: arbitrary code execution via ssh argument injection through a malicious uri

Published: Dec 19, 2025Updated: Dec 19, 2025 Sources: CVE List NVD BDUCWE-88
NVD MITRE
4.8CVSSMEDIUM
EPSS Score
0.1%
Top 98.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:RS:UC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-88

Affected Products

libnbdRed Hat
On-prem
Operating Systems / linux-distro
Red Hat Enterprise Linux 10Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 9Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat OpenShift Virtualization 4Red Hat
SaaSSaaS Service
Cloud & SaaS / virtualization
red hatcommercialUSOperating Systemsaka red hat
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

https://access.redhat.com/security/cve/CVE-2025-14946
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2423789
bugzilla.redhat.com
https://libguestfs.org/libnbd-release-notes-1.24.1.html#Security
libguestfs.org
and 5 more references View all →

Timeline

Published
Dec 19, 2025
Last Updated
Dec 19, 2025

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