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CVE Record

CVE-2021-2477: Vulnerability in the Oracle Applications Framework product of Oracle E-Business Suite (component: Session M...

Vulnerability in the Oracle Applications Framework product of Oracle E-Business Suite (component: Session Management). Supported versions that are affected are 12.1.3 and 12.2.3-12.2.10. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Applications Framework. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Applications Framework. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

MediumCVSS 5.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This Oracle E-Business Suite issue lets an unauthenticated network attacker disrupt part of Oracle Applications Framework over HTTP. The documented impact is partial denial of service, not data theft or code execution. Business urgency is moderate unless affected EBS services are internet-facing or business-critical.

Executive priority

Treat as a moderate operational risk. Prioritize normal patching, but accelerate for public-facing or critical EBS systems because exploitation requires no authentication and can disrupt service availability.

Technical view

CVE-2021-2477 affects Oracle Applications Framework in Oracle E-Business Suite, Session Management component. Supported affected versions are 12.1.3 and 12.2.3 through 12.2.10. The CVSS 3.1 score is 5.3, with network attack vector, low complexity, no privileges, no user interaction, and low availability impact only.

Likely exposure

Exposure is most likely where Oracle E-Business Suite runs affected Applications Framework versions and is reachable over HTTP. Internet-facing, partner-accessible, or broadly internal EBS deployments have higher operational risk.

Exploitation context

The source bundle does not identify active exploitation, and this CVE is not marked as CISA KEV. Sources support easy unauthenticated network exploitation for partial denial of service only.

Researcher notes

Evidence is limited to CVE and Oracle advisory metadata. No CWE, exploit details, or independent exploitation reports are included. Avoid assuming confidentiality or integrity impact beyond the published CVSS vector.

Mitigation direction

  • Review Oracle October 2021 CPU guidance for the applicable E-Business Suite patch.
  • Apply current Oracle-supported patches for affected EBS versions.
  • Restrict HTTP access to EBS from trusted networks until remediation is complete.
  • Monitor Oracle Applications Framework availability for abnormal partial outage patterns.

Validation and detection

  • Inventory Oracle E-Business Suite versions and identify 12.1.3 or 12.2.3-12.2.10 deployments.
  • Confirm Oracle Applications Framework patch status against Oracle CPU guidance.
  • Review whether affected EBS HTTP endpoints are internet-facing or broadly reachable.
  • Check service monitoring and web logs for unexplained availability degradation.
Prepared
Confidence
high
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-2021-2477 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
Medium
CVSS
5.3 (3.1)
Known Exploited
No
Published

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

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
5.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L3.91.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.3Medium
CVSS 3.1 vector shape for CVE-2021-2477Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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 CorporationApplications Framework12.1.3, 12.2.3-12.2.10Listed
Weakness

CWE details

No CWE listed

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