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CVE-2026-70416 – Remote Code Execution via Deserialization – Dell ObjectScale prior to 4.4.0.0

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Summary

CVE-2026-70416 is a critical Deserialization of Untrusted Data vulnerability affecting Dell ObjectScale versions prior to 4.4.0.0. The flaw allows an unauthenticated remote attacker to achieve remote code execution without any user interaction or prior credentials. Dell has rated the issue with the maximum CVSS v3.1 base score of 10.0 (Critical).

Technical details

  • Root cause: The vulnerable component processes untrusted, attacker-controlled serialized data without adequate validation (CWE-502: Deserialization of Untrusted Data), allowing crafted input to trigger arbitrary code execution during deserialization.
  • Trigger conditions: An attacker only needs network access to the exposed ObjectScale service; no authentication or user interaction is required to trigger the vulnerable code path.
  • Attack vector: Network-based (AV:N), with low attack complexity (AC:L) and no privileges required (PR:N), making the vulnerability exploitable remotely and reliably.
  • Impact: Successful exploitation results in remote code execution, giving the attacker full compromise of confidentiality, integrity, and availability of the affected system (C:H/I:H/A:H), with a changed scope (S:C) indicating impact may extend beyond the vulnerable component itself.

Affected software

  • Dell ObjectScale, all versions prior to 4.4.0.0

Severity

  • CVSS v3.1 Base Score: 10.0 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Upgrade Dell ObjectScale to version 4.4.0.0 or later, which remediates this vulnerability. Dell advises customers to open an Operating Environment Upgrade Service Request to apply the fix.
  • If immediate patching is not possible: Restrict network access to ObjectScale management and storage interfaces to trusted, segmented networks only; avoid exposing these services directly to the internet, and monitor for unexpected process execution or configuration changes on affected systems until the upgrade can be completed.

References

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