dbcve.org
Emc Unity Operating EnvironmentApplication · Dell

CVE-2021-36295

HIGH · 7.2 CVSS v3.1 Published 2022-01-25
Fix available
A fix is available. Upgrade to after 8.1.21.266 or later.
See remediation →
78/100
Remediation priority · High
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Dell VNX2 OE for File versions 8.1.21.266 and earlier, contain an authenticated remote code execution vulnerability. A remote malicious user with privileges may exploit this vulnerability to execute commands on the system.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Dell VNX2 OE for File versions 8.1.21.266 and earlier contains an authenticated remote code execution vulnerability. A remote attacker with valid system privileges can exploit this to execute arbitrary commands on the underlying operating system.

MitigationApply the vendor-supplied patch or upgrade to a Dell VNX2 OE for File version later than 8.1.21.266. Restrict administrative access to trusted personnel and monitor for unauthorized access attempts.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Emc Unity Operating EnvironmentApplication
Affected:<= 8.1.21.266

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the installed product
    Confirm whether the target system is a Dell VNX2 or Dell EMC Unity storage array running the File Operating Environment
    Affected if The system is a Dell VNX2 or Dell EMC Unity device running the File OE
  2. Determine the Operating Environment version
    Access the system management interface or CLI to retrieve the installed OE version number
    Affected if The installed version is 8.1.21.266 or any earlier version
  3. Compare version against affected range
    Compare your installed OE version to the affected range: any version <= 8.1.21.266 is vulnerable
    Affected if The installed version is at or below 8.1.21.266
  4. Assess network exposure
    Verify whether the management interfaces are accessible from untrusted or public networks
    Affected if The system management interface is exposed to untrusted networks and valid system credentials are present

A user is affected if the system runs Dell VNX2 or EMC Unity OE for File at version 8.1.21.266 or earlier and the attacker can reach the management interface with valid system credentials.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 8.1.21.266
Interim mitigation

Apply the vendor-supplied patch or upgrade to a Dell VNX2 OE for File version later than 8.1.21.266. Restrict administrative access to trusted personnel and monitor for unauthorized access attempts.

Recommended fix Moderate confidence

Upgrade to a VNX2 OE for File version greater than 8.1.21.266 (contact Dell support for specific fixed release)

  1. 1. Identify the current installed version of Dell VNX2 OE for File by checking the system management interface or running: cat /etc/navisphere/manifest.xml or equivalent version command
  2. 2. Confirm the current version is 8.1.21.266 or earlier, which is affected by CVE-2021-36295
  3. 3. Contact Dell support or access the Dell support portal (support.dell.com) to obtain the latest security update for VNX2 OE for File
  4. 4. Schedule a maintenance window as the upgrade may require system downtime
  5. 5. Follow Dell's official upgrade procedure documented in the VNX2 OE upgrade guide
  6. 6. After upgrade, verify the new version is greater than 8.1.21.266 and confirm the vulnerability is resolved
  7. 7. If direct upgrade is not possible, contact Dell for patch availability or authorized mitigation strategies
Caveat Contact Dell support to verify any compatibility considerations or known issues before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Emc Unity Operating Environment Scoped from the published advisory
  • Consultation8.0 h
  • Implementation12.0 h
  • Testing8.0 h
  • Review / QA4.0 h
32.0 hours of engineering $5,680
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $9,088.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2021-36295 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-36295 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data