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CVE Record

CVE-2021-2386: Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction an...

Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access). Supported versions that are affected are 20.12.0-20.12.3. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Primavera P6 Enterprise Project Portfolio Management. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Primavera P6 Enterprise Project Portfolio Management accessible data. CVSS 3.1 Base Score 4.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

MediumCVSS 4.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-2386 affects Oracle Primavera P6 Enterprise Project Portfolio Management Web Access versions 20.12.0 through 20.12.3. A low-privileged authenticated user with HTTP network access could read some data they should not see. The impact is confidentiality only, but exposed project portfolio systems may contain sensitive operational, financial, or schedule information.

Executive priority

Treat as a moderate-priority confidentiality issue. Patch planning is warranted for affected Primavera P6 environments, especially where project data is commercially sensitive or Web Access is broadly reachable.

Technical view

The CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N, score 4.3. The source describes an easily exploitable Web Access issue requiring low privileges and no user interaction. Successful exploitation allows unauthorized read access to a subset of Primavera P6 EPPM data. No CWE is provided in the source bundle.

Likely exposure

Exposure is limited to organizations running Oracle Primavera P6 EPPM versions 20.12.0-20.12.3 with Web Access reachable over HTTP by authenticated low-privileged users.

Exploitation context

The source bundle does not show CISA KEV listing or cite active exploitation. The main risk is insider, compromised account, or partner-access misuse against reachable Primavera P6 Web Access deployments.

Researcher notes

Evidence is limited to Oracle and CVE sources. Affected versions are explicitly listed as 20.12.0-20.12.3. The source states unauthorized read access to a subset of accessible data, but does not define the vulnerable endpoint, affected data classes, CWE, exploit details, or confirmed exploitation.

Mitigation direction

  • Identify Primavera P6 EPPM instances and confirm whether versions 20.12.0-20.12.3 are present.
  • Review Oracle's July 2021 Critical Patch Update guidance for the vendor-supported remediation path.
  • Restrict Primavera P6 Web Access to trusted networks and required user groups.
  • Review low-privileged accounts and remove unnecessary access until remediation is complete.

Validation and detection

  • Confirm the installed Primavera P6 EPPM version on each production and non-production instance.
  • Verify whether Web Access is reachable over HTTP from untrusted or broad internal networks.
  • Check access-control configuration for users with low-privileged roles.
  • Review logs for unusual data-read activity by low-privileged accounts.
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-2021-2386 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
4.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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
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
4.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N2.81.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.3Medium
CVSS 3.1 vector shape for CVE-2021-2386Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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 CorporationPrimavera P6 Enterprise Project Portfolio Management20.12.0-20.12.3Listed
Weakness

CWE details

No CWE listed

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