Quick answers
- Is CVE-2026-113698 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-113698 being exploited in the wild.
- How severe is CVE-2026-113698?
- Medium severity, with a CVSS score of 6.5, published 8 November 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-2026-113698?
- Yes: fixed in Db2 11.5 via Security Update #94236 or later for V11.5.9; Db2 12.1 via Security Update #94722 or later for V12.1.4 and Security Update #94858 or later for V12.1.5. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-113698 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-113698?
- 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.
How to fix
- Fixed in: Db2 11.5 via Security Update #94236 or later for V11.5.9; Db2 12.1 via Security Update #94722 or later for V12.1.4 and Security Update #94858 or later for V12.1.5
Technical details
This is a stack-based buffer overflow (CWE-121) in Db2's query processing engine when handling Materialized Query Tables. The vulnerability requires authenticated network access but does not require elevated privileges. Exploitation results in denial of service through server crash; there is no data confidentiality or integrity impact.
Affected products
- IBM Db2 11.5.0 through 11.5.9, 12.1.0 through 12.1.5
Timeline
- 2026-10-08: disclosed
- 2026-11-08: advisory