CVE-2020-2553: Vulnerability in the Oracle Knowledge product of Oracle Knowledge (component: Information Manager Console)

Routine

MEDIUM 4.8REMOTEUPGRADE

CVE-2020-2553 is a medium-severity flaw (CVSS 4.8) affecting knowledge. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the Oracle Knowledge product of Oracle Knowledge (component: Information Manager Console). Supported versions that are affected are 8.6.0-8.6.3. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Knowledge. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Knowledge accessible data as well as unaut

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Published	2020-04-15
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

2020-04-15 14:15 UTCPublished CVE record published
2026-06-17 03:12 UTCUpdated Record last modified

oracle knowledge UPGRADE

Affected: >= 8.6.0 and <= 8.6.3

Fixed in: newer than 8.6.3

Safe to downgrade to: a release before 8.6.0

1. Check installed version

apt-cache policy knowledge || rpm -q knowledge || knowledge --version

2. UPGRADE to newer than 8.6.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade knowledge

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade knowledge

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 8.6.0 (Debian / Ubuntu)

apt-cache madison knowledge sudo apt install knowledge=<VERSION_BEFORE_8.6.0> sudo apt-mark hold knowledge

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

dnf --showduplicates list knowledge sudo dnf downgrade knowledge-<VERSION_BEFORE_8.6.0> sudo dnf versionlock add knowledge

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-2020-2553?

knowledge: upgrade to newer than 8.6.3. Exact commands for each OS are on this page.

Is CVE-2020-2553 being exploited?

CVE-2020-2553 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-2020-2553 affect?

CVE-2020-2553 affects knowledge. Severity is medium (CVSS 4.8). Vulnerability in the Oracle Knowledge product of Oracle Knowledge (component: Information Manager Console). Supported versions that are affected are 8.6.0-8.6.3. Difficult to exploit vulnerability allows unauthenticated attacker with networ

How urgent is CVE-2020-2553?

Priority 37/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-2932 MEDIUM 5.9 UPGRADE Vulnerability in the Oracle Knowledge product of Oracle Knowledge (component: Information Manager Console)
CVE-2020-2931 CRITICAL 9.8 UPGRADE Vulnerability in the Oracle Knowledge product of Oracle Knowledge (component: Web Applications - InfoCenter)
CVE-2020-2795 MEDIUM 6.3 UPGRADE Vulnerability in the Oracle Knowledge product of Oracle Knowledge (component: Information Manager Console)
CVE-2020-2791 CRITICAL 9.8 UPGRADE Vulnerability in the Oracle Knowledge product of Oracle Knowledge (component: Information Manager Console)
CVE-2020-2524 MEDIUM 5.9 UPGRADE Vulnerability in the Oracle Knowledge product of Oracle Knowledge (component: InQuira Search)

References

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