CVE-2026-83427: Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Multichannel F

Routine

MEDIUM 6.6UPGRADE

CVE-2026-83427 is a medium-severity flaw (CVSS 6.6) affecting peoplesoft enterprise peopletools. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Multichannel Framework). Supported versions that are affected are 8.61-8.63. Difficult to exploit vulnerability allows high privileged attacker with network access via HTTP to compromise PeopleSoft Enterprise PeopleTools. Successful attacks of this vulnerability can result in takeover of PeopleSoft Enterprise PeopleTools. CVSS 3.1 Base Score 6.6 (Con

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.6 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-284
Published	2026-10-20
Last modified	2026-10-27

Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-10-27 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-20 22:19 UTCPublished CVE record published
2026-10-27 17:54 UTCUpdated Record last modified

oracle peoplesoft enterprise peopletools UPGRADE

Affected: >= 8.61 and <= 8.63

Fixed in: newer than 8.63

Safe to downgrade to: a release before 8.61

1. Check installed version

apt-cache policy peoplesoft-enterprise-peopletools || rpm -q peoplesoft-enterprise-peopletools || peoplesoft-enterprise-peopletools --version

2. UPGRADE to newer than 8.63 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade peoplesoft-enterprise-peopletools

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade peoplesoft-enterprise-peopletools

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 8.61 (Debian / Ubuntu)

apt-cache madison peoplesoft-enterprise-peopletools sudo apt install peoplesoft-enterprise-peopletools=<VERSION_BEFORE_8.61> sudo apt-mark hold peoplesoft-enterprise-peopletools

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

dnf --showduplicates list peoplesoft-enterprise-peopletools sudo dnf downgrade peoplesoft-enterprise-peopletools-<VERSION_BEFORE_8.61> sudo dnf versionlock add peoplesoft-enterprise-peopletools

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-2026-83427?

peoplesoft enterprise peopletools: upgrade to newer than 8.63. Exact commands for each OS are on this page.

Is CVE-2026-83427 being exploited?

CVE-2026-83427 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-2026-83427 affect?

CVE-2026-83427 affects peoplesoft enterprise peopletools. Severity is medium (CVSS 6.6). Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Multichannel Framework). Supported versions that are affected are 8.61-8.63. Difficult to exploit vulnerability allows high privileged attacker

How urgent is CVE-2026-83427?

Priority 30/100. No elevated risk signals yet.

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References

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