CVE-2026-34312: Vulnerability in the RDBMS component of Oracle Database Server

Routine

LOW 2.4UPGRADE

CVE-2026-34312 is a low-severity flaw (CVSS 2.4) 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 19.3-19.30. Easily exploitable vulnerability allows high privileged attacker having Row Access Method privilege with network access via multiple protocols to compromise RDBMS. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized read access to

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	2.4 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.2% (top 90%)
CISA exploited list	No
Weakness	CWE-284
Published	2026-04-21
Last modified	2026-10-26

Publisher (CNA): Oracle · Vendor: oracle

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-21 21:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

oracle database server UPGRADE

Affected: >= 19.3 and <= 19.30

Fixed in: newer than 19.30

Safe to downgrade to: a release before 19.3

1. Check installed version

apt-cache policy database-server || rpm -q database-server || database-server --version

2. UPGRADE to newer than 19.30 (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 19.3 (Debian / Ubuntu)

apt-cache madison database-server sudo apt install database-server=<VERSION_BEFORE_19.3> 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_19.3> 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.

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-2026-34312?

database server: upgrade to newer than 19.30. Exact commands for each OS are on this page.

Is CVE-2026-34312 being exploited?

CVE-2026-34312 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-2026-34312 affect?

CVE-2026-34312 affects database server. Severity is low (CVSS 2.4). Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 19.3-19.30. Easily exploitable vulnerability allows high privileged attacker having Row Access Method privilege with network access vi

How urgent is CVE-2026-34312?

Priority 11/100. No elevated risk signals yet.

Software pages

Oracle Database vulnerabilities

Related CVEs

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CVE-2026-47045 MEDIUM 6.8 UPGRADE Vulnerability in the JDBC component of Oracle Database Server
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References

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