CVE-2026-56688: Dell PowerFlex Manager, Version prior to 5.1.0.1, contain(s) an Improper Neutralization of Special Elements us

This month

CRITICAL 9.1UPGRADE

CVE-2026-56688 is a critical-severity flaw (CVSS 9.1) affecting powerflex manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dell PowerFlex Manager, Version prior to 5.1.0.1, contain(s) an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability during OS Repository processing to achieve arbitrary command execution as root, potentially leading to full appliance compromise and lateral movement into managed infrastructure.

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-07-10
Last modified	2026-10-24

Publisher (CNA): Dell · Vendor: dell

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-10 12:17 UTCPublished CVE record published
2026-10-24 23:10 UTCUpdated Record last modified

dell powerflex manager UPGRADE

Affected: >= 4.5.5 and < 4.5.5.2 · >= 5.1.0 and < 5.1.0.1

Fixed in: 4.5.5.2, 5.1.0.1

Safe to downgrade to: a release before 4.5.5

1. Check installed version

apt-cache policy powerflex-manager || rpm -q powerflex-manager || powerflex-manager --version

2. UPGRADE to 4.5.5.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade powerflex-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade powerflex-manager

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 4.5.5 (Debian / Ubuntu)

apt-cache madison powerflex-manager sudo apt install powerflex-manager=<VERSION_BEFORE_4.5.5> sudo apt-mark hold powerflex-manager

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list powerflex-manager sudo dnf downgrade powerflex-manager-<VERSION_BEFORE_4.5.5> sudo dnf versionlock add powerflex-manager

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-56688?

powerflex manager: upgrade to 4.5.5.2, 5.1.0.1. Exact commands for each OS are on this page.

Is CVE-2026-56688 being exploited?

CVE-2026-56688 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-56688 affect?

CVE-2026-56688 affects powerflex manager. Severity is critical (CVSS 9.1). Dell PowerFlex Manager, Version prior to 5.1.0.1, contain(s) an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability. A high privileged attacker with remote access could potentially exploi

How urgent is CVE-2026-56688?

Priority 52/100. Critical severity

Software pages

Dell vulnerabilities

Related CVEs

CVE-2026-56690 HIGH 8.5 UPGRADE Dell PowerFlex Manager, Version prior to 5.1.0.1, contain(s) an Improper Neutralization of Special Elements us
CVE-2026-56689 HIGH 7.7 UPGRADE Dell PowerFlex Manager, Version prior to 5.1.0.1, contain(s) an Improper Neutralization of Special Elements us

References

← Back to latest CVEs