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CVE Record

CVE-2021-35566: Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component: Diagnostics).

Vulnerability in the Oracle Applications Manager product of Oracle E-Business Suite (component: Diagnostics). Supported versions that are affected are 12.1.3 and 12.2.3-12.2.10. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Applications Manager. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Applications Manager accessible data as well as unauthorized access to critical data or complete access to all Oracle Applications Manager accessible data. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

HighCVSS 8.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-35566 affects Oracle Applications Manager in Oracle E-Business Suite. A low-privileged attacker with HTTP network access could gain broad read and write access to Applications Manager data. The business risk is unauthorized viewing or modification of critical operational data, not service outage.

Executive priority

Prioritize remediation for internet-facing or broadly reachable E-Business Suite environments. The main concern is unauthorized access to and modification of critical business data by a low-privileged user.

Technical view

The vulnerability is in Oracle Applications Manager, Diagnostics component, affecting versions 12.1.3 and 12.2.3 through 12.2.10. CVSS 3.1 is 8.1: network exploitable, low complexity, low privileges required, no user interaction, high confidentiality and integrity impact, no availability impact.

Likely exposure

Exposure is most likely where Oracle E-Business Suite Applications Manager is reachable over HTTP by authenticated low-privileged users, especially from broad internal networks or remote access paths.

Exploitation context

The bundle does not cite active exploitation, and CISA KEV is false. The issue is still serious because exploitation is described as easy once a low-privileged attacker has HTTP access.

Researcher notes

Sources provide CVSS, affected versions, access vector, and impact, but do not include CWE mapping, proof-of-concept status, or detailed fix identifiers in the supplied bundle.

Mitigation direction

  • Review Oracle October 2021 CPU guidance for affected E-Business Suite systems.
  • Apply the applicable Oracle-supplied fixes or supported update path.
  • Restrict HTTP access to Applications Manager to trusted administrative networks.
  • Review low-privileged account access to Oracle Applications Manager.
  • Increase monitoring for unexpected Diagnostics or Applications Manager data changes.

Validation and detection

  • Inventory Oracle E-Business Suite versions and Applications Manager deployments.
  • Confirm whether versions 12.1.3 or 12.2.3-12.2.10 are present.
  • Verify October 2021 CPU remediation status with Oracle patch records.
  • Check whether Applications Manager is reachable over HTTP from user networks.
  • Review logs for unusual low-privileged access to Diagnostics functions.
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-2021-35566 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
8.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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
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
8.1CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N2.85.2Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.1High
CVSS 3.1 vector shape for CVE-2021-35566Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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 CorporationApplications Manager12.1.3, 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.