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CVE-2026-71062: Vulnerability in the RDBMS component of Oracle Database Server

36
Routine
HIGH 8.5UPGRADE

CVE-2026-71062 is a high-severity flaw (CVSS 8.5) affecting database server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Difficult to exploit vulnerability allows low privileged attacker having Authenticated User privilege with network access via Oracle Net to compromise RDBMS. While the vulnerability is in RDBMS, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeove

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score8.5 (High)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededLow
User interactionNone
EPSS exploit chance0.3% (top 74%)
CISA exploited listNo
WeaknessCWE-284
Published2026-08-18
Last modified2026-10-22
Publisher (CNA): Oracle · Vendor: oracle

Am I affected?

Timeline

oracle database server UPGRADE
Affected: >= 23.4.0 and <= 23.26.3
Fixed in: newer than 23.26.3
Safe to downgrade to: a release before 23.4.0
1. Check installed version
apt-cache policy database-server || rpm -q database-server || database-server --version
2. UPGRADE to newer than 23.26.3 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade database-server
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade database-server
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 23.4.0 (Debian / Ubuntu)
apt-cache madison database-server sudo apt install database-server=<VERSION_BEFORE_23.4.0> sudo apt-mark hold database-server
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list database-server sudo dnf downgrade database-server-<VERSION_BEFORE_23.4.0> sudo dnf versionlock add database-server
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.

Exact fixes by distribution

Fedora 46 · wasmedge · FIXED · 0.18.1-1.fc46 · FEDORA-2026-4c27216e39 · source
sudo dnf upgrade --advisory=FEDORA-2026-4c27216e39
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.

Related CVEs

References

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