CVE-2025-21526: Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and E

Routine

MEDIUM 5.4UPGRADE

CVE-2025-21526 is a medium-severity flaw (CVSS 5.4) affecting primavera p6 enterprise project portfolio management. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access). Supported versions that are affected are 20.12.1.0-20.12.21.5, 21.12.1.0-21.12.20.0, 22.12.1.0-22.12.16.0 and 23.12.1.0-23.12.10.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Primavera P6 Enterprise Project Portfolio Management. Successf

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 90%)
CISA exploited list	No
Weakness	CWE-352
Published	2025-01-21
Last modified	2026-06-17

Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-01-21 21:15 UTCPublished CVE record published
2026-06-17 08:43 UTCUpdated Record last modified

oracle primavera p6 enterprise project portfolio management UPGRADE

Affected: >= 20.12.1.0 and <= 20.12.21.5 · >= 21.12.1.0 and <= 21.12.20.0 · >= 22.12.1.0 and <= 22.12.16.0 · >= 23.12.1.0 and <= 23.12.10.0

Fixed in: newer than 23.12.10.0

Safe to downgrade to: a release before 20.12.1.0

1. Check installed version

apt-cache policy primavera-p6-enterprise-project-portfolio-management || rpm -q primavera-p6-enterprise-project-portfolio-management || primavera-p6-enterprise-project-portfolio-management --version

2. UPGRADE to newer than 23.12.10.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade primavera-p6-enterprise-project-portfolio-management

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade primavera-p6-enterprise-project-portfolio-management

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 20.12.1.0 (Debian / Ubuntu)

apt-cache madison primavera-p6-enterprise-project-portfolio-management sudo apt install primavera-p6-enterprise-project-portfolio-management=<VERSION_BEFORE_20.12.1.0> sudo apt-mark hold primavera-p6-enterprise-project-portfolio-management

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list primavera-p6-enterprise-project-portfolio-management sudo dnf downgrade primavera-p6-enterprise-project-portfolio-management-<VERSION_BEFORE_20.12.1.0> sudo dnf versionlock add primavera-p6-enterprise-project-portfolio-management

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-21526?

primavera p6 enterprise project portfolio management: upgrade to newer than 23.12.10.0. Exact commands for each OS are on this page.

Is CVE-2025-21526 being exploited?

CVE-2025-21526 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-21526 affect?

CVE-2025-21526 affects primavera p6 enterprise project portfolio management. Severity is medium (CVSS 5.4). Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and Engineering (component: Web Access). Supported versions that are affected are 20.12.1.0-20.12.21.5, 21.12.1.0-21.12.20.0, 22.12.1.

How urgent is CVE-2025-21526?

Priority 21/100. No elevated risk signals yet.

Related CVEs

CVE-2025-50061 MEDIUM 5.4 UPGRADE Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and E
CVE-2025-21558 MEDIUM 5.4 UPGRADE Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and E
CVE-2025-21528 MEDIUM 4.3 UPGRADE Vulnerability in the Primavera P6 Enterprise Project Portfolio Management product of Oracle Construction and E

References

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