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CVE-2026-3623: IBM Netezza Performance Server Replication Services 3.0.2.0 through 3.0.5.0 allows an attacker with low‑privil

28
Routine
HIGH 7.8UPGRADE

CVE-2026-3623 is a high-severity flaw (CVSS 7.8) affecting netezza performance server replication services. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM Netezza Performance Server Replication Services 3.0.2.0 through 3.0.5.0 allows an attacker with low‑privileged access to escalate their privileges to root. By exploiting this flaw, the attacker can execute root‑level commands, obtain a root shell, and change the root user’s password. Successful exploitation also enables modification or removal of system‑wide files and the installation of persistent backdoors. This results in full system compr

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score7.8 (High)
Attack vectorLocal
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.2% (top 96%)
CISA exploited listNo
WeaknessCWE-250
Published2026-05-27
Last modified2026-10-26
Publisher (CNA): IBM Corporation · Vendor: ibm

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

Am I affected?

Timeline

ibm netezza performance server replication services UPGRADE
Affected: >= 3.0.2.0 and < 3.0.5.1
Fixed in: 3.0.5.1
Safe to downgrade to: a release before 3.0.2.0
1. Check installed version
apt-cache policy netezza-performance-server-replication-services || rpm -q netezza-performance-server-replication-services || netezza-performance-server-replication-services --version
2. UPGRADE to 3.0.5.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade netezza-performance-server-replication-services
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade netezza-performance-server-replication-services
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 3.0.2.0 (Debian / Ubuntu)
apt-cache madison netezza-performance-server-replication-services sudo apt install netezza-performance-server-replication-services=<VERSION_BEFORE_3.0.2.0> sudo apt-mark hold netezza-performance-server-replication-services
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list netezza-performance-server-replication-services sudo dnf downgrade netezza-performance-server-replication-services-<VERSION_BEFORE_3.0.2.0> sudo dnf versionlock add netezza-performance-server-replication-services
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-2026-3623?

netezza performance server replication services: upgrade to 3.0.5.1. Exact commands for each OS are on this page.

Is CVE-2026-3623 being exploited?

CVE-2026-3623 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-2026-3623 affect?

CVE-2026-3623 affects netezza performance server replication services. Severity is high (CVSS 7.8). IBM Netezza Performance Server Replication Services 3.0.2.0 through 3.0.5.0 allows an attacker with low‑privileged access to escalate their privileges to root. By exploiting this flaw, the attacker can execute root‑level commands, obtain a

How urgent is CVE-2026-3623?

Priority 28/100. High severity

References

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