# CVE-2026-86093

## Summary

- **CVE ID:** CVE-2026-86093
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** CWE-121
- **Published:** Sep 10, 2026
- **Last Modified:** Sep 10, 2026

## Description

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands on Db2 clients due to a stack-based buffer overflow that improperly copies user-controlled data into a fixed-size stack buffer without bounds checking.

## Affected Products

- IBM — Db2 (11.5.0)
- IBM — Db2 (12.1.0)

## References

- [CNA](https://www.ibm.com/support/pages/node/7286993)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._