CVE-2026-10109

CRITICAL

Published Jun 30, 2026 Modified Jul 2, 2026 CWE-94

Description

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to remote code execution due to improper pre-auth DRDA handshake handling.

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0086

Probability of exploitation

0.54%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-94 CWE-94

Affected Products

Vendor	Product	Versions
ibm	db2	11.5.0 — 11.5.9
ibm	db2	12.1.0 — 12.1.4

References

Advisories & Patches

https://www.ibm.com/support/pages/node/7277424

Frequently Asked Questions

What is CVE-2026-10109? +

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to remote code execution due to improper pre-auth DRDA handshake handling. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-10109? +

CVE-2026-10109 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0086, placing it in the 1th percentile for exploitation probability.

What products are affected by CVE-2026-10109? +

CVE-2026-10109 affects products from ibm, specifically: db2. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-10109? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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