Cyber Resilience

CVE-2025-46641

Auth Bypass in Dell Data Domain Operating System 8.4.0.0 – 8.5.0.0

Published
17 April 2026
Modified
05 May 2026
Patch / advisory
CVSS Score v3.1 6.6
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0035 28th percentile
Risk Priority 45 floored blend · peak EPSS

Summary

CVE-2025-46641 is a medium-severity Improper Authentication (CWE-287) vulnerability in Dell Data Domain Operating System. Its CVSS base score is 6.6 (Medium).

Operationally, ranked at the 28th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-17 (Remote Access) and IA-2 (Identification and Authentication (Organizational Users)) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 8.4 through 8.5 contain an improper authentication vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access.

CWE(s)

Related Threats

CVEs Like This One

CVE-2026-53483Same product: Dell Data Domain Operating System
CVE-2025-46607Same product: Dell Data Domain Operating System
CVE-2024-37139Same product: Dell Data Domain Operating System
CVE-2025-46643Same product: Dell Data Domain Operating System
CVE-2026-56086Same product: Dell Data Domain Operating System
CVE-2024-48010Same product: Dell Data Domain Operating System
CVE-2026-53479Same product: Dell Data Domain Operating System
CVE-2026-44268Same product: Dell Data Domain Operating System
CVE-2026-35073Same product: Dell Data Domain Operating System
CVE-2025-43934Same product: Dell Data Domain Operating System

Affected Assets

dell
data domain operating system
8.4.0.0 — 8.5.0.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • IA-2 Identification and Authentication (Organizational Users)
  • AC-17 Remote Access
  • AC-3 Access Enforcement
Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)
  • 8 hardening rules · 5 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V6.4.4
  • V6.5.4
  • V6.5.5
  • V6.5.7

Mitigating Controls (NIST 800-53 r5) AI

prevent

Directly requires identification and authentication of users before granting access, mitigating the improper authentication flaw (CWE-287) that allows unauthorized remote access.

prevent

Enforces authentication and access controls specifically for remote connections to the Data Domain system, blocking exploitation of the reported remote improper-authentication vulnerability.

prevent

Enforces approved authorizations (derived from proper authentication) before allowing access, limiting the impact of any bypassed authentication checks in DD OS 8.4-8.5.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-03 mostly match
prevents

PR.AA-03 directly enforces authentication mechanisms that eliminate most improper-authentication defects, yet CWE-287 spans additional vectors (missing checks, flawed protocols, session handling) that one control does not fully close.

PR.AA-04 mostly match
prevents

PR.AA-04 directly enables verification of identity assertions (mostly preventing CWE-287 in that scope) yet leaves many other authentication failure modes unaddressed (only partial prevention overall).

PR.AA-01 partial match
prevents

PR.AA-01 supplies and governs credentials/tokens that authentication relies on, removing some weak-credential cases, yet leaves verification logic, missing checks, and protocol flaws untouched.

PR.AA-02 partial match
prevents

PR.AA-02 ensures valid enrollment and unique credential binding, which reduces some improper-auth risks at issuance time but leaves runtime claim verification untouched, so each direction only partially addresses the other.

PR.PS-01 partial match
prevents

PR.PS-01 can enforce auth-related settings via hardened baselines and default reviews, blocking some config-based instances of CWE-287, yet leaves code-level auth flaws untouched so neither direction reaches mostly.

PR.PS-02 partial match
prevents

Patching/maintenance can remediate some known auth vulnerabilities after deployment (partial forward) but does not address the design or implementation of authentication logic itself (none reverse).

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

prevents

Requiring authentication methods whose strength matches the sensitivity of the data and mandating multi-factor authentication directly blocks attempts to access resources without proving identity.

prevents

Verifying user identity before issuing replacement credentials and forcing changes after compromise reduces the likelihood that authentication bypass can be achieved through stolen or weak credentials.

prevents

Mandating segregated approval and oversight for non-human identities reduces the chance that weak or orphaned credentials can be exploited for unauthorized authentication.

mitigates

Requiring authentication mechanisms and technical parameters for secure connections ensures that network services verify user identity before granting access, preventing exploitation of missing or weak authentication.

prevents

Security requirements specified early and verified through testing drive the consistent implementation of authentication mechanisms, decreasing the likelihood that authentication steps are omitted or incorrectly applied.

prevents

Defining the required level of trust in entity identity and the authentication mechanisms to achieve it ensures that authentication is explicitly addressed rather than omitted.

References