CVE-2026-17463
Received Received - Intake

IBM Db2 Remote Denial of Service Vulnerability

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: IBM Corporation

Description
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow a remote authenticated attacker to cause a denial of service due to uncontrolled resource consumption.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-10-05
AI Q&A
2026-09-14
EPSS Evaluated
2026-10-03
NVD
CVE-2026-17463
EUVD
EUVD-2026-77784

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
ibm db2 From 11.5.0 (inc) to 11.5.9 (inc)
ibm db2 From 12.1.0 (inc) to 12.1.5 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

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Executive Summary

IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 for Linux, UNIX, and Windows are vulnerable to a denial of service issue. A remote authenticated attacker could exploit this by causing uncontrolled resource consumption, leading to service disruption.

Detection Guidance

Detection of CVE-2026-17463 requires monitoring for unusual resource consumption patterns in IBM Db2. Check for elevated CPU, memory, or disk usage by Db2 processes using system monitoring tools like top, ps, or htop. Review Db2 diagnostic logs for errors or warnings indicating resource exhaustion. IBM recommends applying security updates from Fix Central for versions 11.5.9, 12.1.4, and 12.1.5 to mitigate the risk.

Impact Analysis

This vulnerability could allow an attacker to disrupt the availability of your IBM Db2 database services. If exploited, it may cause the database to become unresponsive or crash, leading to downtime and potential loss of access to critical data.

Compliance Impact

This vulnerability could lead to denial of service due to uncontrolled resource consumption, which may disrupt data availability. For GDPR, availability is a key principle, so prolonged outages could risk compliance. HIPAA requires ensuring data accessibility; service disruptions might violate this requirement.

Mitigation Strategies
  • Apply the security updates released by IBM for affected Db2 versions (11.5.9, 12.1.4, and 12.1.5) via Fix Central.
  • Monitor network traffic for unusual resource consumption patterns that may indicate exploitation attempts.

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