What’s Vulnerable › Vulnerabilities

CVE-2021-21589

• Severity: medium (CVSS 6.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-07-12 · updated 2026-06-17

Description

Dell EMC Unity, Unity XT, and UnityVSA versions prior to 5.1.0.0.5.394 do not exit on failed Initialization. A local authenticated Service user could potentially exploit this vulnerability to escalate privileges.

Affected products

• Dell Emc Unity Operating Environment: before 5.1.0.0.5.394 — fixed in 5.1.0.0.5.394
• Dell Emc Unity Xt Operating Environment: before 5.1.0.0.5.394 — fixed in 5.1.0.0.5.394
• Dell Emc Unityvsa Operating Environment: before 5.1.0.0.5.394 — fixed in 5.1.0.0.5.394

How to fix

Upgrade to a fixed version: Dell Emc Unity Operating Environment 5.1.0.0.5.394; Dell Emc Unity Xt Operating Environment 5.1.0.0.5.394; Dell Emc Unityvsa Operating Environment 5.1.0.0.5.394. Check the vendor advisory for mitigations.

References

• https://www.dell.com/support/kbdoc/000189204
• https://www.dell.com/support/kbdoc/000189204

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