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CVE Record

CVE-2021-2284: Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core).

Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.20. Easily exploitable vulnerability allows unauthenticated attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle VM VirtualBox accessible data. CVSS 3.1 Base Score 7.1 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N).

HighCVSS 7.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-2284 is a high-severity integrity flaw in Oracle VM VirtualBox before 6.1.20. An attacker who can log on to the infrastructure where VirtualBox runs could alter, create, or delete critical data accessible to VirtualBox. The sources do not confirm active exploitation.

Executive priority

Prioritize remediation where VirtualBox runs on shared infrastructure, developer endpoints, or systems touching sensitive data. The main business concern is unauthorized data modification, not confirmed remote compromise or data theft from the provided evidence.

Technical view

Oracle describes this as a Core component vulnerability in VM VirtualBox before 6.1.20. CVSS 3.1 is 7.1 with local attack vector, low complexity, no privileges, no user interaction, changed scope, high integrity impact, and no confidentiality or availability impact.

Likely exposure

Exposure is most likely on workstations, lab hosts, developer machines, or build infrastructure running Oracle VM VirtualBox earlier than 6.1.20. Remote-only systems without VirtualBox are not indicated as affected by the source bundle.

Exploitation context

The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. Exploitation requires local access to the infrastructure where VirtualBox executes, but Oracle rates it easily exploitable once that access exists.

Researcher notes

Public details in the bundle are sparse: no CWE, root cause, or exploit narrative is provided. The strongest source-grounded facts are the affected product/version boundary, CVSS vector, local access requirement, changed scope, and high integrity impact.

Mitigation direction

  • Inventory systems running Oracle VM VirtualBox.
  • Upgrade VirtualBox to 6.1.20 or later, following Oracle guidance.
  • For Gentoo-managed systems, follow GLSA-202208-36 package guidance.
  • Restrict local logon access to hosts running VirtualBox.
  • Review VirtualBox-accessible data for integrity sensitivity.

Validation and detection

  • Confirm installed VirtualBox versions are 6.1.20 or later.
  • Check endpoint and asset inventories for older VirtualBox installations.
  • Verify package manager status against Oracle or Gentoo advisory guidance.
  • Review local user access on VirtualBox hosts.
  • Assess whether critical data is accessible through VirtualBox workflows.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2021-2284 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.1 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.1CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N2.54Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.1High
CVSS 3.1 vector shape for CVE-2021-2284Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Oracle CorporationVM VirtualBoxunspecifiedListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.