Medium · CVSS 4.8CVE-2025-14946

Libnbd: libnbd: arbitrary code execution via ssh argument injection through a malicious uriCVE-2025-14946

Answer in brief

CVE-2025-14946 records a Medium severity (CVSS 4.8) vulnerability in Libnbd: libnbd: arbitrary code execution via ssh argument injection through a malicious uri. The current sources do not mark it as known exploited. The current feed maps Red Hat/libnbd (generic), Red Hat/libnbd (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Dec 19, 2025Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Oct 14, 2026Material review Nov 5, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 4.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/libnbd (generic), Red Hat/libnbd (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Red Hat/libnbdgeneric	>=1.22.0 <1.22.5 \|\| >=1.23.0 <1.23.9	1.22.5, 1.23.9
Red Hat/libnbdgeneric	*	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/libnbd, Red Hat/libnbd.
Review the reported fix. Source-reported workaround: To mitigate this issue, ensure that applications utilizing libnbd do not process Uniform Resource Identifiers (URIs) from untrusted or unverified sources. This vulnerability requires a malicious actor to convince libnbd to open a specially crafted URI, therefore restricting the sources of URIs processed by libnbd can reduce exposure.

Evidence timeline and material changes

Published upstream
Dec 19, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 14, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Affected scope and exposure questions

The current feed maps Red Hat/libnbd (generic), Red Hat/libnbd (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Red Hat/libnbdgeneric	>=1.22.0 <1.22.5 \|\| >=1.23.0 <1.23.9	1.22.5, 1.23.9
Red Hat/libnbdgeneric	*	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/libnbd, Red Hat/libnbd.

Review the reported fix. Source-reported workaround: To mitigate this issue, ensure that applications utilizing libnbd do not process Uniform Resource Identifiers (URIs) from untrusted or unverified sources. This vulnerability requires a malicious actor to convince libnbd to open a specially crafted URI, therefore restricting the sources of URIs processed by libnbd can reduce exposure.

Sources and claim methodology

Upstream source description

Quoted source text, attributed separately from HOL analysis.