CVE-2026-56688 -- CVSS 9.1 Vulnerability Briefing

CVE-2026-56688 | CVSS 9.1 (Critical) | Exploit: No known exploit

What Is It

CVE-2026-56688 is an OS command injection vulnerability in Dell PowerFlex Manager, affecting all versions prior to 5.1.0.1.

Technical Detail

The flaw exists due to improper neutralization of special elements passed to OS-level commands within Dell PowerFlex Manager, a software-defined infrastructure management platform. A high-privileged attacker who has authenticated to the system can craft malicious input that is passed unsanitized to the underlying operating system, enabling arbitrary command execution in the context of the application. Successful exploitation results in remote code execution on the host, potentially allowing full system compromise, lateral movement within the managed infrastructure environment, or disruption of PowerFlex-managed storage and compute resources.

Exploitation Status

No known exploit exists for this vulnerability at this time. The exploit maturity is assessed as none, and this CVE is not currently listed in the CISA Known Exploited Vulnerabilities catalog. No public proof-of-concept code has been identified as of July 17, 2026.

Who Is Targeting This

No specific threat actor attribution at this time. Neither confirmed nor reported threat actor activity has been associated with this vulnerability in available intelligence sources.

What To Do

Dell has released a patched version addressing this vulnerability. Organizations running Dell PowerFlex Manager should upgrade to version 5.1.0.1 or later as a priority, given the critical CVSS score of 9.1. Until patching is complete, access to the PowerFlex Manager administrative interface should be restricted to trusted networks and authorized personnel only, reducing the exposure window for any authenticated attacker. Organizations should audit current administrative account access and review logs for anomalous command execution activity originating from the management plane. No CISA binding directive applies at this time as the CVE is not KEV-listed.