CVE-2026-49502: Dell PowerFlex Manager Authentication Bypass

Technical summary

CVE-2026-49502 is an improper authentication vulnerability (CWE-287) in Dell PowerFlex Manager that affects all versions prior to 5.1.0.1. The vulnerability allows unauthenticated attackers with adjacent network access (AV:A in the CVSS vector) to bypass authentication mechanisms. The attack requires no user interaction and has low attack complexity, enabling straightforward exploitation. The impact spans confidentiality (C:H) and integrity concerns within a changed scope (S:C), though availability is not directly impacted. The lack of authentication validation means an attacker can interact with critical PowerFlex Manager functions without presenting valid credentials.

Business impact

PowerFlex Manager is a core component for managing Dell storage infrastructure. A successful exploitation could allow competitors, disgruntled employees, or internal threat actors to access storage configuration data, modify settings, or disrupt service operations. Organizations relying on PowerFlex Manager for multi-site or hybrid storage orchestration face potential data exposure and operational continuity risks. The HIGH severity rating reflects the broad attack scope and high confidentiality impact, making this a priority remediation for any environment where PowerFlex Manager is internet-facing or connected to untrusted network segments.

Affected systems

Dell PowerFlex Manager versions prior to 5.1.0.1 are affected. Organizations should verify their current deployment version and identify all instances across production, development, and disaster recovery environments. PowerFlex Manager is typically deployed as a management appliance in storage and infrastructure environments, often in restricted network zones but sometimes exposed to broader internal networks or cloud deployments.

Exploitability

The vulnerability is actively exploitable with low barriers to entry. An attacker requires only network adjacency—no authentication credentials, no user interaction, and no special tools beyond standard network access. This makes it a credible threat for internal threat actors or compromised systems on the same network. The CVSS vector AV:A designation indicates the attacker must be on an adjacent network; however, this could encompass VLAN-adjacent systems, shared cloud infrastructure, or systems connected to the same management network. The lack of known public exploit code (not listed in CISA KEV) does not reduce urgency, as the attack surface is straightforward for a skilled attacker to discover and weaponize.

Remediation

Apply the patch to upgrade PowerFlex Manager to version 5.1.0.1 or later. Verify the patch version against Dell's official security advisory before deployment. Additionally, implement compensating controls: restrict network access to PowerFlex Manager management interfaces using firewall rules and VLANs, enforce network segmentation between storage and general-purpose networks, and monitor for unauthorized access attempts or suspicious configuration changes. Consider disabling unnecessary management protocols if not in active use.

Patch guidance

Dell has released a patched version (5.1.0.1 or later). Organizations should consult Dell's official security advisory for specific patch files, supported upgrade paths, and any prerequisites or post-upgrade configuration steps. Test patches in a non-production environment first, especially given PowerFlex Manager's role in storage orchestration. Plan maintenance windows to minimize disruption to dependent applications. After patching, verify that authentication is properly enforced and audit recent access logs for any suspicious activity prior to the patch deployment.

Detection guidance

Monitor network traffic for unauthenticated connections to PowerFlex Manager management ports. Log and alert on failed and successful authentication attempts, particularly from unexpected source IPs or VLANs. Review PowerFlex Manager audit logs for configuration changes made by unknown or unauthorized sessions. Inspect firewall logs for traffic patterns suggesting reconnaissance or lateral movement toward PowerFlex Manager. Look for API calls or management actions that lack proper authentication context. Network intrusion detection systems should be tuned to flag suspicious access patterns to management interfaces on the affected version range.

Why prioritize this

Although not yet listed on CISA's Known Exploited Vulnerabilities catalog, this HIGH-severity vulnerability affecting authentication should be prioritized for immediate remediation. The combination of low attack complexity, no authentication requirement, and network-adjacent attack surface makes it a realistic threat in multi-tenant or hybrid environments. The broad scope impact (S:C) means a compromise could affect multiple systems or services relying on PowerFlex Manager. Organizations with air-gapped or strictly segmented networks may deprioritize slightly, but most deployments warrant urgent action within 30 days.

Risk score, explained

The CVSS 3.1 score of 7.4 (HIGH) reflects a high-confidentiality impact vulnerability with low attack complexity and no authentication requirement. The adjacent network access vector (AV:A) limits the threat to network-adjacent attackers rather than remote internet access, but this is insufficient to lower the overall severity given the straightforward exploitation path and the criticality of PowerFlex Manager to storage infrastructure. An attacker with network access can freely read sensitive configuration and operational data without any barriers to entry.

Frequently asked questions