CVE-2025-46364: Dell CloudLink Privilege Escalation Flaw

CVE-2025-46364 Overview

CVE-2025-46364 is a privilege escalation vulnerability in Dell CloudLink versions prior to 8.1.1. The flaw allows a privileged user with a known password to abuse a CLI escape weakness and gain control of the underlying system. The issue is tracked under CWE-269: Improper Privilege Management and was published in Dell Security Advisory DSA-2025-374. Successful exploitation results in full compromise of confidentiality, integrity, and availability on the affected CloudLink appliance.

Critical Impact
An authenticated attacker with valid privileged credentials can escape the restricted CLI and execute commands at the operating system level, taking full control of the Dell CloudLink instance.

Affected Products

Dell CloudLink versions prior to 8.1.1
Dell CloudLink encryption key management appliance
Deployments using the CloudLink command-line interface for administration

Discovery Timeline

2025-11-05 - CVE-2025-46364 published to NVD
2025-11-07 - Last updated in NVD database

Technical Details for CVE-2025-46364

Vulnerability Analysis

Dell CloudLink provides encryption key management and policy enforcement for virtualized and cloud workloads. Administrative tasks are performed through a restricted command-line interface that is intended to limit operators to a defined set of management functions. CVE-2025-46364 breaks that boundary. A user holding privileged CloudLink credentials can trigger a CLI escape condition that yields access to the underlying operating system shell. Once the restricted interface is escaped, the attacker inherits the privileges of the CLI process and can run arbitrary operating system commands, modify configuration, exfiltrate key material, or pivot deeper into the environment.

Root Cause

The root cause is improper privilege management within the CloudLink CLI. The interface fails to fully constrain authenticated privileged sessions, permitting an escape from the management shell into a higher-privilege execution context. Because CloudLink mediates cryptographic key operations, a compromised appliance can expose secrets that protect data across connected workloads.

Attack Vector

Exploitation requires network access to the CloudLink management interface and valid privileged credentials. No user interaction is required, and attack complexity is low. The vulnerability is most relevant in scenarios where credentials have been reused, phished, or obtained from another compromise, where an insider abuses legitimate access, or where a lower-tier administrator chains additional flaws to reach privileged CLI access. Public proof-of-concept code is not currently available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2025-46364

Indicators of Compromise

Unexpected shell processes spawned by the CloudLink CLI service account or session
CLI sessions transitioning into interactive operating system shells (/bin/sh, /bin/bash) outside of supported workflows
Configuration changes, package installations, or new cron jobs on the CloudLink appliance without a matching change request
Outbound connections from the CloudLink appliance to addresses that are not part of normal key management traffic

Detection Strategies

Audit CloudLink authentication logs for privileged logins from unusual source IP addresses or at off-hours
Compare running processes on the CloudLink appliance against a known-good baseline to identify shell escapes
Alert on any command execution that deviates from the documented CloudLink CLI command set
Monitor for repeated failed CLI commands followed by a successful escape attempt within a single session

Monitoring Recommendations

Forward CloudLink syslog and audit events to a centralized SIEM and retain them for forensic review
Enable session recording for all privileged administrative access to the appliance
Track integrity of critical configuration files and key material storage on the appliance
Correlate CloudLink administrative events with identity provider logs to detect credential abuse

How to Mitigate CVE-2025-46364

Immediate Actions Required

Upgrade Dell CloudLink to version 8.1.1 or later as directed in DSA-2025-374
Rotate all privileged CloudLink credentials and any keys that may have been exposed to a compromised appliance
Restrict network access to the CloudLink management interface to a small set of trusted administrative hosts
Review CloudLink audit logs for signs of CLI escape activity prior to patching

Patch Information

Dell has released a fix in Dell CloudLink 8.1.1. Customers should follow the remediation guidance in the Dell Security Update DSA-2025-374. The advisory addresses multiple security vulnerabilities and should be applied as a complete update rather than piecemeal.

Workarounds

Limit the number of accounts that hold privileged CloudLink roles and enforce strong, unique passwords
Require multi-factor authentication on all identity providers that federate into CloudLink administration
Place the CloudLink management interface behind a jump host or bastion with session logging until patching is complete
Monitor privileged sessions in real time and terminate any session that attempts to invoke a non-CLI binary

bash

# Configuration example
# Restrict access to the CloudLink management interface to an admin subnet
iptables -A INPUT -p tcp --dport 443 -s 10.10.50.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP