Is CVE-2026-10534 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-10534 being exploited in the wild.

How severe is CVE-2026-10534?

High severity, with a CVSS score of 8.4, published 12 August 2026.

Which products and versions are affected?

IBM Db2 11.5.0 through 11.5.9, 12.1.0 through 12.1.5.

Is there a fix for CVE-2026-10534?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-10534 attacked?

It is attacked with local access, in a hosted service.

Am I affected by CVE-2026-10534?

Check whether you run IBM Db2 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-10534: IBM Db2 buffer overflow in IXF IMPORT parser

CVE-2026-10534 · Severity: high · CVSS 8.4 · Published 2026-08-12

IBM Db2 is a widely-used enterprise database management system that processes data imports in IXF (Integration Exchange Format) files. A buffer overflow vulnerability in the import parser allows local attackers to cause a denial of service or potentially execute arbitrary code on systems running affected versions. This could lead to unauthorized access to sensitive business data or disruption of database operations.

Technologies: IBM Db2. Vendors: IBM.

Quick answers

Is CVE-2026-10534 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-10534 being exploited in the wild.
How severe is CVE-2026-10534?: High severity, with a CVSS score of 8.4, published 12 August 2026.
Which products and versions are affected?: IBM Db2 11.5.0 through 11.5.9, 12.1.0 through 12.1.5.
Is there a fix for CVE-2026-10534?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-10534 attacked?: It is attacked with local access, in a hosted service.
Am I affected by CVE-2026-10534?: Check whether you run IBM Db2 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow (CWE-121) exists in the IXF IMPORT parser of IBM Db2. The vulnerability requires local access to the affected system (no network vector) and no user authentication is required, meaning any local user can trigger the flaw by providing a specially crafted IXF import file. Successful exploitation can lead to high-impact consequences including disclosure of confidential data, data integrity compromise, and complete availability loss. IBM has released security updates for Db2 11.5.9 and 12.1.4/12.1.5; patches are available via IBM Fix Central and referenced security bulletins.

Affected products

IBM Db2 11.5.0 through 11.5.9, 12.1.0 through 12.1.5

Timeline

2026-08-07: disclosed

References

https://www.ibm.com/support/pages/node/7279461

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