CVE-2026-79687: Dell PowerStore SDNAS contains a Missing Authentication for Critical Function vulnerability

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CRITICAL 9.0REMOTEMITIGATE

CVE-2026-79687 is a critical-severity flaw (CVSS 9.0) affecting powerstoreos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dell PowerStore SDNAS contains a Missing Authentication for Critical Function vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Filesystem access.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.0 (Critical)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-09-01
Last modified	2026-10-02

Publisher (CNA): Dell · Vendor: dell

Last updated 2026-10-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-01 16:17 UTCPublished CVE record published
2026-10-02 17:29 UTCUpdated Record last modified

dell powerstoreos MITIGATE

Affected: 4.1.0.0 build_2435323 · 4.1.0.1 build_2529516 · 4.1.0.2 build_2567482 · 4.1.0.3 build_2596462 · 4.1.0.4 build_2633110 · 4.1.0.5 build_2691357 · 4.3.0.0 build_2611831 · 4.3.1.0 build_2662695

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.0.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2026-79687?

powerstoreos: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-79687 being exploited?

CVE-2026-79687 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-2026-79687 affect?

CVE-2026-79687 affects powerstoreos. Severity is critical (CVSS 9.0). Dell PowerStore SDNAS contains a Missing Authentication for Critical Function vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Filesystem access.

How urgent is CVE-2026-79687?

Priority 42/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Dell vulnerabilities

Related CVEs

CVE-2026-28265 MEDIUM 4.4 UPGRADE PowerStore, contains a Path Traversal vulnerability in the Service user
CVE-2026-58567 HIGH 8.8 MITIGATE Dell PowerStore contains an OS Command Injection vulnerability
CVE-2026-79682 HIGH 8.8 MITIGATE Dell PowerStore contains a Command Injection vulnerability
CVE-2026-58569 HIGH 8.8 MITIGATE Dell PowerStore contains an Inclusion of Functionality from Untrusted Control Sphere vulnerability
CVE-2026-58572 HIGH 8.8 MITIGATE Dell PowerStore contains a Code Injection vulnerability

References

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