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CVE Record

CVE-2021-2366: 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 17.12.0-17.12.20, 18.8.0-18.8.23, 19.12.0-19.12.14 and 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. While the vulnerability is in Primavera P6 Enterprise Project Portfolio Management, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Primavera P6 Enterprise Project Portfolio Management accessible data as well as unauthorized read access to a subset of Primavera P6 Enterprise Project Portfolio Management accessible data. CVSS 3.1 Base Score 6.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N).

MediumCVSS 6.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-2366 affects Oracle Primavera P6 EPPM Web Access. A low-privileged user who can reach the web interface over HTTP could read some accessible data and change some data without authorization. The business risk is project data confidentiality and integrity, not system outage.

Executive priority

Prioritize remediation for internet-facing or broadly accessible P6 environments because the issue can affect project data integrity. Treat as a moderate business risk unless exposure includes sensitive project portfolios or untrusted users.

Technical view

Oracle lists affected supported versions as 17.12.0-17.12.20, 18.8.0-18.8.23, 19.12.0-19.12.14, and 20.12.0-20.12.3. The CVSS 3.1 score is 6.4 with network attack vector, low complexity, low privileges, no user interaction, changed scope, and low confidentiality and integrity impact.

Likely exposure

Exposure is most likely where Primavera P6 EPPM Web Access is reachable by authenticated low-privileged users over HTTP, especially shared enterprise or partner-access project environments.

Exploitation context

The source states the flaw is easily exploitable by a low-privileged attacker with HTTP network access. The provided sources do not show known active exploitation, and CISA KEV status is false in the bundle.

Researcher notes

The source bundle does not identify a CWE, vulnerable endpoint, payload, or detailed root cause. Research should stay focused on version validation, Web Access exposure, privilege boundaries, and audit evidence rather than unverified exploit assumptions.

Mitigation direction

  • Review Oracle July 2021 Critical Patch Update guidance for Primavera P6 EPPM.
  • Upgrade affected Primavera P6 EPPM versions to a vendor-supported fixed level.
  • Limit Web Access reachability to trusted networks and authenticated users.
  • Review low-privileged account access to sensitive project data.
  • Monitor for unauthorized project data reads, inserts, updates, or deletes.

Validation and detection

  • Inventory Primavera P6 EPPM Web Access deployments and version numbers.
  • Compare versions against Oracle's affected ranges for CVE-2021-2366.
  • Confirm applicable Oracle security updates are installed in each environment.
  • Review audit logs for suspicious low-privileged data changes or reads.
  • Check whether Web Access is exposed beyond intended internal or partner networks.
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-2021-2366 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/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
6.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.4Medium
CVSS 3.1 vector shape for CVE-2021-2366Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/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 Management17.12.0-17.12.20, 18.8.0-18.8.23, 19.12.0-19.12.14, 20.12.0-20.12.3Listed
Weakness

CWE details

No CWE listed

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