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CVE Record

CVE-2021-2283: 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 access to critical data or complete access to all Oracle VM VirtualBox accessible data. CVSS 3.1 Base Score 7.1 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/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

This flaw can let someone with access to a system running Oracle VM VirtualBox read sensitive data available to VirtualBox. It is not described as internet-remote, but it matters where VirtualBox runs on shared workstations, build hosts, labs, or infrastructure with valuable VM data.

Executive priority

Treat this as a high-priority hygiene fix for VirtualBox hosts containing sensitive data or used by multiple users. It is less urgent than a confirmed internet-exploited issue, but stale VirtualBox versions can expose critical data once a user or attacker has host access.

Technical view

CVE-2021-2283 affects Oracle VM VirtualBox Core before 6.1.20. The CVSS vector is local, low complexity, no privileges, no user interaction, scope changed, high confidentiality impact, and no integrity or availability impact. Oracle states attacks could expose critical data or all VirtualBox-accessible data.

Likely exposure

Exposure is likely limited to hosts running Oracle VM VirtualBox prior to 6.1.20 where an unauthenticated attacker can log on to the infrastructure where VirtualBox executes. The bundle does not identify specific operating systems, configurations, or CPEs.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation evidence. Oracle describes the vulnerability as easily exploitable by an attacker with logon to the VirtualBox infrastructure, so risk depends heavily on who can access those hosts.

Researcher notes

No CWE is provided in the bundle. The notable CVSS detail is scope changed with confidentiality high, while integrity and availability are none. The phrase PR:N is paired with Oracle's requirement for logon to the infrastructure, so validation should focus on local access paths and host placement.

Mitigation direction

  • Upgrade Oracle VM VirtualBox to 6.1.20 or a later vendor-supported fixed version.
  • Apply relevant distribution updates, including Gentoo guidance where Gentoo packages are used.
  • Restrict logon access to systems where VirtualBox executes.
  • Review Oracle CPU April 2021 guidance for environment-specific remediation details.

Validation and detection

  • Inventory systems running Oracle VM VirtualBox.
  • Verify installed VirtualBox versions are not prior to 6.1.20.
  • Confirm package managers report the fixed vendor build installed.
  • Review who has logon access to VirtualBox host infrastructure.
  • Assess sensitive data reachable through VirtualBox shared folders, disks, and VM workflows.
Prepared
Confidence
high
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-2021-2283 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:H/I:N/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:H/I:N/A:N2.54Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.1High
CVSS 3.1 vector shape for CVE-2021-2283Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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