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CVE Record

CVE-2021-2409: 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 6.1.24. Easily exploitable vulnerability allows high privileged 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 takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

HighCVSS 8.2Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-2409 is a high-severity Oracle VM VirtualBox Core flaw affecting versions before 6.1.24. An attacker already holding high privileges on infrastructure where VirtualBox runs could take over VirtualBox, with possible impact beyond the VirtualBox product itself.

Executive priority

Prioritize remediation where VirtualBox runs on shared, administrative, build, or sensitive infrastructure. The attacker already needs high privileges, but successful exploitation can fully compromise VirtualBox and may affect connected products or workloads.

Technical view

The CVSS 3.1 vector is AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H, score 8.2. The issue is local, low-complexity, requires high privileges, needs no user interaction, changes scope, and can produce high confidentiality, integrity, and availability impact.

Likely exposure

Exposure is limited to environments running Oracle VM VirtualBox prior to 6.1.24. Risk is most relevant on managed workstations, build hosts, lab systems, and virtualization hosts where privileged users or administrators can log on.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation evidence. Exploitation requires high privileged local access to the infrastructure where VirtualBox executes, so this is not described as a remote unauthenticated internet-facing issue.

Researcher notes

The bundle does not provide CWE, root-cause detail, or exploit mechanics. Scope changed and high CIA impact are the key technical signals. Treat validation as version and exposure confirmation rather than exploit reproduction.

Mitigation direction

  • Upgrade Oracle VM VirtualBox to 6.1.24 or later.
  • Apply Oracle July 2021 Critical Patch Update guidance.
  • Apply Gentoo GLSA-202208-36 updates where Gentoo packages are used.
  • Restrict privileged logon access to systems running VirtualBox.
  • Check vendor guidance if unsupported VirtualBox versions remain deployed.

Validation and detection

  • Inventory all hosts with Oracle VM VirtualBox installed.
  • Confirm VirtualBox versions are 6.1.24 or later.
  • Identify any privileged users with logon access to VirtualBox hosts.
  • Verify Oracle CPU or distribution package updates were applied.
  • Review whether VirtualBox hosts support sensitive workloads.
Prepared
Confidence
high
Sources
5

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-2021-2409 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
8.2 (3.1)
Known Exploited
No
Published

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

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
4Source 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
8.2CVSS 3.1HighCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H1.56Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.2High
CVSS 3.1 vector shape for CVE-2021-2409Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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.