CVE-2026-9744Network attack vector

Unauthenticated data alteration via certificate hostname mismatch

Published Sep 3, 2026 · Updated Sep 4, 2026

Improper TLS certificate validation in IBM Netezza Software 11.3.0.3 through Interim Fix 002 allows remote attackers to alter data. The affected TLS client does not ensure that a presented certificate matches the intended host; IBM has not identified the component or request path. Exploitation requires a man-in-the-middle position and permits alteration of Netezza communications without authentication or user interaction.

CVSS severity5.3
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper TLS certificate validation in IBM Netezza Software 11.3.0.3 through Interim Fix 002 allows remote attackers to alter data. The affected TLS client does not ensure that a presented certificate matches the intended host; IBM has not identified the component or request path. Exploitation requires a man-in-the-middle position and permits alteration of Netezza communications without authentication or user interaction.

The record

CVE
CVE-2026-9744
Published
Sep 3, 2026
Updated
Sep 4, 2026
Vendor
IBM
Product
IBM Netezza Performance Server
Classifications
CWE-297, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.3.0.3 <=Interim Fix 002

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Netezza Performance Serverversion=11.3.0.3 <=Interim Fix 002

Published CVSS scores

5.3IBMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-297Improper Validation of Certificate with Host Mismatch
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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