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Security Bulletin: IBM® Db2® is vulnerable to denial of service (CVE-2020-4200).

Security Bulletin


Db2 is vulnerable to a denial of service. Authenticated users using a JDBC client may send specially crafted commands to cause Db2 to terminate abnormally.

Vulnerability Details

CVEID:   CVE-2020-4200
DESCRIPTION:   IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow an authenticated attacker to send specially crafted commands to cause a denial of service.
CVSS Base score: 6.5
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

All fix pack levels of IBM Db2 V10.5, V11.1, and V11.5 editions on all platforms are affected.


Customers running any vulnerable fixpack level of an affected Program, V10.5, V11.1, V11.5 can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent fixpack level for each impacted release: V10.5 FP10, V11.1 FP5 V11.5 GA. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.

ReleaseFixed in fix packAPARDownload URL
V10.5TBDIT31516Special Build for V10.5 FP10:

AIX 64-bit
HP-UX 64-bit
Linux 32-bit, x86-32
Linux 64-bit, x86-64
Linux 64-bit, POWER™ big endian
Linux 64-bit, POWER™ little endian
Linux 64-bit, System z®, System z9® or zSeries®
Solaris 64-bit, SPARC
Solaris 64-bit, x86-64
Windows 32-bit, x86
Windows 64-bit, x86




Build for v11.1.4FP6

V11.5TBDIT31515Special Build for V11.5 GA:

AIX 64-bit
Linux 32-bit, x86-32
Linux 64-bit, x86-64
Linux 64-bit, POWER™ little endian
Linux 64-bit, System z®, System z9® or zSeries®
Windows 32-bit, x86
Windows 64-bit, x86

Workarounds and Mitigations


Get Notified about Future Security Bulletins




Change History

10 March 2021:  Replaced Special Build urls with the 11.1.4FP6 url
18 Feb 2020: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document Location


[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Component":"","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"10.5, 11.1, 11.5","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
10 March 2021