CVE-2025-1000: db2 DoS — Fix

Description

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 through 11.5.9 and 12.1.0 through 12.1.1 could allow an authenticated user to cause a denial of service when connecting to a z/OS database due to improper handling of automatic client rerouting.

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CVSS v3.1 Score

5.3

MEDIUM

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

Weakness Type (CWE)

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
ibm	db2	11.5 — 11.5.9
ibm	db2	11.5 — 11.5.9
ibm	db2	11.5 — 11.5.9
ibm	db2	12.1.0 — 12.1.1
ibm	db2	12.1.0 — 12.1.1
ibm	db2	12.1.0 — 12.1.1

References

Advisories & Patches

https://www.ibm.com/support/pages/node/7232528

Other References

https://security.netapp.com/advisory/ntap-20250516-0002/

Frequently Asked Questions

What is CVE-2025-1000? +

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 through 11.5.9 and 12.1.0 through 12.1.1 could allow an authenticated user to cause a denial of service when connecting to a z/OS database due to improper handling of automatic client rerouting. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-1000? +

CVE-2025-1000 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-1000? +

CVE-2025-1000 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-2025-1000? +

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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