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Missing Authentication in Dell Storage Manager 20.1.21

IdentifiersCVE-2025-43994CWE-306· Missing Authentication for…

CVE-2025-43994 is a missing authentication for critical function vulnerability in Dell Storage Manager (DSM) version 20.1.21. According to the provided content, certain DSM management functions exposed over the network do not enforce required authentication checks, allowing a remote attacker to invoke them without valid credentials. The issue is described as affecting critical storage-management functionality and can lead to information disclosure; the supporting content also indicates exposed functions may permit access to sensitive storage configuration data and potentially modification of storage settings, depending on which unauthenticated functions are reachable.

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ANALYST BRIEF

Impact, mitigation & remediation

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Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an unauthenticated remote attacker to access protected management functionality in Dell Storage Manager. The primary documented impact is information disclosure, including exposure of sensitive storage configuration or management data. The supporting content further indicates that, depending on the specific exposed function, an attacker may also be able to manipulate storage settings, which could affect confidentiality and operational integrity of managed storage environments.

Mitigation

If you can’t patch tonight, do this now.

Until the vendor fix is applied, restrict network access to Dell Storage Manager management interfaces to trusted administrative hosts only, using segmentation, firewall ACLs, VPN-only access, and removal of unnecessary exposure from untrusted networks. Monitor for unauthenticated access attempts to DSM management endpoints and review logs for unexpected retrieval of storage-management data or unauthorized configuration activity. If feasible, temporarily disable or isolate externally reachable management services associated with DSM until patched.

Remediation

Patch, then assume compromise.

Upgrade Dell Storage Manager to a remediated release. The provided content states Dell identified Dell Storage Manager 2020 R1.22 or later as the remediated version, and that versions prior to 2020 R1.21 are affected in the broader advisory context. Apply Dell’s vendor update referenced in advisory DSA-2025-393 and verify the management platform is running the fixed release after installation.
PUBLIC EXPLOITS

Exploits

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VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType
Dell TechnologiesDell Storage Managerapplication
Dell TechnologiesStorage Managerapplication

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Associated malware

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Detection signatures

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Social activity1

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