CVE-2025-30479: Dell CloudLink RCE Vulnerability

CVE-2025-30479 Overview

CVE-2025-30479 is a command injection vulnerability in Dell CloudLink versions prior to 8.2. A privileged user with a known password can inject operating system commands to gain full control of the underlying system. The flaw is tracked under CWE-78, Improper Neutralization of Special Elements used in an OS Command.

Dell published advisory DSA-2025-374 on November 5, 2025 to address this issue. The vulnerability carries a CVSS 3.1 score of 7.2 and an EPSS probability of 1.127%.

Critical Impact
Successful exploitation grants attackers full command execution on Dell CloudLink hosts, compromising the confidentiality, integrity, and availability of encrypted workloads managed by the platform.

Affected Products

Dell CloudLink versions prior to 8.2
Dell CloudLink key management server deployments
Dell CloudLink encryption agents tied to vulnerable management nodes

Discovery Timeline

2025-11-05 - CVE-2025-30479 published to NVD
2025-11-05 - Dell releases security update DSA-2025-374
2025-11-07 - Last updated in NVD database

Technical Details for CVE-2025-30479

Vulnerability Analysis

CVE-2025-30479 is an OS command injection flaw [CWE-78] in Dell CloudLink, a key management and encryption platform for virtualized and cloud workloads. An authenticated user holding a privileged role can submit crafted input to an administrative interface or API. The input is concatenated into a shell command without proper neutralization, allowing arbitrary OS commands to execute in the security context of the CloudLink service.

Exploitation requires valid credentials for a privileged account, which raises the bar but does not prevent abuse. Stolen administrator credentials, insider misuse, or session hijacking can each lead to full host takeover. Because CloudLink manages encryption keys for downstream workloads, attacker control of the host can cascade into exposure of protected data across the environment.

Root Cause

The vulnerability stems from improper neutralization of special elements passed to an OS command interpreter. Dell does not disclose the affected component name in the public advisory. The fix is delivered in CloudLink 8.2, indicating remediation through input validation, parameterized command execution, or removal of shell invocation from the affected code path.

Attack Vector

The attack vector is network-based and requires high privileges with no user interaction. An authenticated administrator submits a malicious payload to a vulnerable management endpoint. The payload breaks out of the intended command context, executing attacker-supplied operating system commands with the privileges of the CloudLink process. No public proof-of-concept exploit code is currently available.

The vulnerability is described in prose only because no verified exploit samples have been released. See the Dell Security Update DSA-2025-374 for vendor technical details.

Detection Methods for CVE-2025-30479

Indicators of Compromise

Unexpected child processes spawned by Dell CloudLink service accounts, particularly shells such as bash, sh, or interpreters like python and perl.
Outbound network connections originating from CloudLink hosts to unfamiliar external IP addresses shortly after administrator API activity.
New or modified files in CloudLink configuration and key storage directories without a corresponding change request.

Detection Strategies

Monitor CloudLink administrative audit logs for parameter values containing shell metacharacters such as ;, |, &, `, or $(.
Correlate privileged CloudLink user sessions with process creation events on the underlying host to flag command spawning anomalies.
Alert on CloudLink service processes invoking system utilities that are not part of normal operational baselines.

Monitoring Recommendations

Forward CloudLink application and host logs to a centralized SIEM for retention and correlation with identity telemetry.
Enable file integrity monitoring on CloudLink binaries, configuration files, and key vault directories.
Track privileged account usage and enforce session recording for administrator logins to the CloudLink console.

How to Mitigate CVE-2025-30479

Immediate Actions Required

Upgrade all Dell CloudLink instances to version 8.2 or later as documented in DSA-2025-374.
Rotate credentials for all CloudLink privileged accounts and enforce multi-factor authentication where supported.
Audit privileged user activity since the last known-good state to identify suspicious administrative actions.

Patch Information

Dell addresses CVE-2025-30479 in Dell CloudLink 8.2. Apply the update per the instructions in DSA-2025-374. The advisory covers multiple vulnerabilities, so a single upgrade resolves the full set.

Workarounds

Restrict network access to the CloudLink management interface to a small set of trusted administrative hosts.
Reduce the number of accounts assigned privileged CloudLink roles and review role assignments for least privilege.
Place CloudLink management traffic behind a jump host or bastion that enforces strong authentication and session logging.

bash

# Configuration example: restrict CloudLink admin interface with iptables
iptables -A INPUT -p tcp --dport 8443 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8443 -j DROP