CVE-2026-49502: Dell PowerFlex Manager Auth Bypass Flaw

CVE-2026-49502 Overview

CVE-2026-49502 is an improper authentication vulnerability [CWE-287] affecting Dell PowerFlex Manager. The flaw allows an unauthenticated attacker with adjacent network access to bypass authentication controls. Successful exploitation can lead to information disclosure, information tampering, and unauthorized access to the management interface.

The vulnerability carries a CVSS 3.1 base score of 7.4 and is reachable from the adjacent network without user interaction. Dell has published advisory DSA-2026-066 to address the issue across affected PowerFlex Manager versions.

Critical Impact
An unauthenticated adjacent attacker can bypass authentication in Dell PowerFlex Manager to disclose data, tamper with information, and gain unauthorized access to storage management functionality.

Affected Products

Dell PowerFlex Manager (versions listed in Dell advisory DSA-2026-066)
Dell PowerFlex software stack components managed by PowerFlex Manager
Deployments exposing PowerFlex Manager to adjacent management networks

Discovery Timeline

2026-06-17 - CVE CVE-2026-49502 published to NVD
2026-06-17 - Last updated in NVD database
DSA-2026-066 - Dell publishes security update for PowerFlex software

Technical Details for CVE-2026-49502

Vulnerability Analysis

Dell PowerFlex Manager is the orchestration and lifecycle management console for PowerFlex software-defined storage clusters. The product contains an improper authentication weakness in the code path that validates client identity before granting access to management functions.

Because authentication is not enforced correctly, an attacker on the same logical network segment as the PowerFlex Manager interface can interact with protected functionality without supplying valid credentials. The CVSS vector indicates a scope change, meaning the impact extends beyond the vulnerable component to resources it manages, including storage nodes and configuration data.

The confidentiality impact is rated high, while integrity and availability impacts are rated none. This pattern is consistent with an authentication bypass that primarily exposes sensitive data and administrative views, with secondary potential for tampering through exposed management actions.

Root Cause

The root cause is improper authentication [CWE-287] in PowerFlex Manager. The component fails to correctly verify that a request originates from an authenticated principal before processing it. Refer to Dell Security Update DSA-2026-066 for the precise affected versions and patched builds.

Attack Vector

Exploitation requires adjacent network access (AV:A), such as a position on the same VLAN, management network, or layer-2 broadcast domain as the PowerFlex Manager appliance. No privileges (PR:N) and no user interaction (UI:N) are required. Attack complexity is low, meaning a reliable exploit does not depend on specialized conditions once network adjacency is achieved.

The vulnerability mechanism is described in prose only because no verified proof-of-concept code is available. See the Dell advisory for technical remediation details.

Detection Methods for CVE-2026-49502

Indicators of Compromise

Unexpected administrative or read API requests to PowerFlex Manager originating from hosts that do not belong to the authorized management station inventory.
Authentication and audit log entries that show access to protected endpoints without a corresponding successful login event.
Sudden enumeration of storage objects, volumes, or system inventory from a single adjacent source address.

Detection Strategies

Compare PowerFlex Manager access logs against an allowlist of administrator workstations and alert on deviations.
Inspect management-plane network flows for sessions that bypass the normal login sequence yet still receive successful responses from protected endpoints.
Hunt for repeated requests to PowerFlex Manager API paths from a single adjacent host within short time windows.

Monitoring Recommendations

Forward PowerFlex Manager appliance logs, authentication events, and audit trails to a central SIEM for correlation.
Enable NetFlow or packet capture on the management VLAN to retain evidence of pre-patch reconnaissance.
Alert on any new device that begins communicating with the PowerFlex Manager interface for the first time.

How to Mitigate CVE-2026-49502

Immediate Actions Required

Apply the fixed PowerFlex Manager version identified in Dell Security Update DSA-2026-066 as soon as a maintenance window allows.
Restrict layer-2 and layer-3 reachability to PowerFlex Manager so that only authorized administrative hosts share an adjacent network with the appliance.
Review PowerFlex Manager access and audit logs for evidence of unauthorized interaction prior to patching.

Patch Information

Dell addresses CVE-2026-49502 in the PowerFlex software update referenced by advisory DSA-2026-066. Administrators should consult the advisory for the exact fixed version that corresponds to their installed release train and apply it through the standard Dell PowerFlex upgrade procedure.

Workarounds

Isolate the PowerFlex Manager management interface on a dedicated VLAN protected by strict access control lists until the patch is applied.
Require administrators to reach PowerFlex Manager only through a hardened jump host with multifactor authentication.
Disable or block adjacent network paths that are not strictly required for storage operations.

bash

# Example: restrict access to PowerFlex Manager to a single admin subnet
# Replace 10.10.50.0/24 with your authorized management network
# and <pfxm_ip> with the PowerFlex Manager address
iptables -A INPUT -p tcp -d <pfxm_ip> --dport 443 -s 10.10.50.0/24 -j ACCEPT
iptables -A INPUT -p tcp -d <pfxm_ip> --dport 443 -j DROP