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Netezza Performance Server Replication ServicesApplication · Ibm

CVE-2026-3623

HIGH · 7.8 CVSS v3.1 Published 2026-05-27
Fix available
A fix is available. Upgrade to 3.0.5.1 or later.
See remediation →
80/100
Remediation priority · High
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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 compromise with complete loss of confidentiality, integrity, and availability.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

IBM Netezza Performance Server Replication Services versions 3.0.2.0 through 3.0.5.0 contain a local privilege escalation vulnerability allowing low-privileged authenticated users to gain root-level access. Attackers can execute arbitrary commands as root, obtain a root shell, modify system files, and establish persistent backdoors, resulting in complete system compromise.

MitigationUpgrade IBM Netezza Performance Server Replication Services to a version beyond 3.0.5.0 or apply the vendor-provided patch. Restrict low-privileged user access to the replication services until the update is applied.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Netezza Performance Server Replication ServicesApplication
Affected:>= 3.0.2.0, < 3.0.5.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Determine the installed version of IBM Netezza Performance Server Replication Services
    Query the replication services component version using Netezza command-line tools (such as nzstate, nzversion, or package-specific version commands) or inspect the installation metadata that ships with the replication services package.
    Affected if The version is 3.0.2.0, 3.0.3.0, 3.0.4.0, 3.0.5.0, or any version greater than or equal to 3.0.2.0 but less than 3.0.5.1
  2. Confirm replication services are active on the host
    Check for running replication-related processes or services on the system. Use system commands to list active processes or services associated with Netezza replication functionality.
    Affected if Replication services are running and the version falls within the affected range from step 1
  3. Identify low-privileged users with replication access
    Review user accounts and permissions that have access to the replication services functionality. Check for any authenticated users who are not granted administrative or root privileges but have replication-related roles or permissions.
    Affected if Low-privileged authenticated users exist with access to replication services and the version is vulnerable

The environment is affected if IBM Netezza Performance Server Replication Services version is 3.0.2.0 through 3.0.5.0, replication services are enabled, and low-privileged users have authenticated access to the system.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 3.0.5.1 or later
Fixed in 3.0.5.1
Interim mitigation

Upgrade IBM Netezza Performance Server Replication Services to a version beyond 3.0.5.0 or apply the vendor-provided patch. Restrict low-privileged user access to the replication services until the update is applied.

Recommended fix High confidence

3.0.5.1

  1. 1. Check current IBM Netezza Performance Server Replication Services version using the system administration tools or nzversion command
  2. 2. Review IBM Netezza 3.0.5.1 release notes and upgrade documentation for compatibility requirements
  3. 3. Create a complete backup of all databases, configuration files, and system state before proceeding
  4. 4. Schedule a maintenance window as upgrades may require downtime
  5. 5. Download IBM Netezza Performance Server Replication Services version 3.0.5.1 from IBM Fix Central or your entitled IBM repository
  6. 6. Follow IBM's standard upgrade procedure: stop all replication services, run the installer, validate the installation, then restart services
  7. 7. After upgrade, verify the version is now 3.0.5.1 using the version check command
  8. 8. Test replication functionality and confirm low-privileged users can no longer escalate to root privileges

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Netezza Performance Server Replication Services Scoped from the published advisory
  • Consultation3.0 h
  • Implementation2.0 h
  • Testing6.0 h
  • Review / QA3.0 h
14.0 hours of engineering $2,400
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,840.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-3623 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data