CVE-2021-21589
No known exploitation. EPSS puts it in the 9th percentile. Fixed in 5.1.0.0.5.394.
What to do
Find your product and version, then upgrade to the build on the right.
- Dell UnityAffected: ≥ unspecified, < 5.1.0.0.5.394Upgrade to: 5.1.0.0.5.394Stated by: CVE record
- Dell Emc Unity Operating EnvironmentAffected: < 5.1.0.0.5.394Upgrade to: 5.1.0.0.5.394Stated by: NVD
- Dell Emc Unity Xt Operating EnvironmentAffected: < 5.1.0.0.5.394Upgrade to: 5.1.0.0.5.394Stated by: NVD
- Dell Emc Unityvsa Operating EnvironmentAffected: < 5.1.0.0.5.394Upgrade to: 5.1.0.0.5.394Stated by: NVD
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 9th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
4 events over 1228 days, from the signal feeds we watch.
- Patch availablerecord updated
- Publishedweakness classified
Affected products
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
Scored 5.7 by NVD.
How it is reached
- Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
- Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
- Privileges Required HighRequires admin or elevated privileges
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality NoneNo confidentiality impact
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
Sources
References in the record
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