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CVE Record

CVE-2021-2248: Vulnerability in the Oracle Secure Global Desktop product of Oracle Virtualization (component: Server).

Vulnerability in the Oracle Secure Global Desktop product of Oracle Virtualization (component: Server). The supported version that is affected is 5.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Secure Global Desktop. While the vulnerability is in Oracle Secure Global Desktop, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle Secure Global Desktop.

CriticalCVSS 10Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

CVE-2021-2248 is a critical Oracle Secure Global Desktop server vulnerability affecting version 5.6. An unauthenticated network attacker could compromise the product and potentially take it over, with possible downstream impact to connected systems.

Executive priority

Treat this as urgent for any organization running Oracle Secure Global Desktop 5.6. The issue allows unauthenticated remote compromise and potential product takeover, so exposed systems should be found and remediated quickly.

Technical view

Oracle describes this as an easily exploitable Server component issue in Secure Global Desktop 5.6. CVSS 3.1 is 10.0: network attack vector, low complexity, no privileges, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.

Likely exposure

Exposure is most likely where Oracle Secure Global Desktop 5.6 is deployed and reachable over supported network protocols, especially from untrusted networks or the internet.

Exploitation context

The provided sources do not show CISA KEV listing or confirmed active exploitation. Risk remains severe because exploitation requires no authentication or user interaction and can lead to takeover.

Researcher notes

No CWE, exploit indicators, or detailed workaround are included in the provided bundle. Oracle’s advisory is the authoritative source for remediation. The changed-scope CVSS vector aligns with Oracle’s warning that other products may be significantly impacted.

Mitigation direction

  • Identify all Oracle Secure Global Desktop deployments and versions.
  • Review Oracle April 2021 CPU guidance for CVE-2021-2248.
  • Apply Oracle vendor-supplied security updates or supported upgrade guidance.
  • Restrict network access to Secure Global Desktop services where possible.
  • Prioritize remediation for internet-facing or partner-accessible deployments.

Validation and detection

  • Confirm whether Secure Global Desktop 5.6 is present in asset inventory.
  • Check whether exposed services are reachable from untrusted networks.
  • Verify Oracle CPU remediation status on each affected host.
  • Review administrative and service logs for unexplained activity.
  • Document compensating controls if patching cannot occur immediately.
Prepared
Confidence
medium
Sources
3

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-2021-2248 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
Critical
CVSS
10 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/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
2Source 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
10CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

10Critical
CVSS 3.1 vector shape for CVE-2021-2248Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/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 CorporationSecure Global Desktop5.6Listed
Weakness

CWE details

No CWE listed

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