ESB-2026.3798
PUBLISHED
CVSS 4.800000190734863 MEDIUM
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AUSCERT External Security Bulletin Redistribution
ESB-2026.3798
IBM Db2 is affected by a vulnerability in log4j-core-2.17.2
(CVE-2025-68161)
16 April 2026
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AUSCERT Security Bulletin Summary
---------------------------------
Product: Db2
Publisher: IBM
Operating System: Linux
Resolution: Patch/Upgrade
CVE Names: CVE-2025-68161
Original Bulletin:
https://www.ibm.com/support/pages/node/7269429
Comment: CVSS (Max): 4.8 CVE-2025-68161 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)
CVSS Source: IBM
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS (Max): 0.0% (10th) CVE-2025-68161 2026-04-15
- --------------------------BEGIN INCLUDED TEXT--------------------
IBM Support
Document Information
Document number : 7269429
Modified date : More support for: Db2 for Linux, UNIX and Windows
Product : Db2 for Linux, UNIX and Windows
Component : -
Software version : 11.5.9, 12.1.x
Operating system(s): Linux
Linux on IBM Z Systems
Security Bulletin
Summary
IBM Db2 is affected by a vulnerability in log4j-core-2.17.2 (CVE-2025-68161)
Vulnerability Details
CVEID: CVE-2025-68161
DESCRIPTION: The Socket Appender in Apache Log4j Core versions 2.0-beta9
through 2.25.2 does not perform TLS hostname verification of the peer
certificate, even when the verifyHostName https://logging.apache.org/log4j/2.x/
manual/appenders/network.html#SslC... configuration attribute or the
log4j2.sslVerifyHostName https://logging.apache.org/log4j/2.x/manual/
systemproperties.html#log4j... system property is set to true. This issue may
allow a man-in-the-middle attacker to intercept or redirect log traffic under
the following conditions: * The attacker is able to intercept or redirect
network traffic between the client and the log receiver. * The attacker can
present a server certificate issued by a certification authority trusted by the
Socket Appender's configured trust store (or by the default Java trust store if
no custom trust store is configured). Users are advised to upgrade to Apache
Log4j Core version 2.25.3, which addresses this issue. As an alternative
mitigation, the Socket Appender may be configured to use a private or
restricted trust root to limit the set of trusted certificates.
CWE: CWE-297: Improper Validation of Certificate with Host Mismatch
CVSS Source: NVD
CVSS Base score: 4.8
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)
Affected Products and Versions
+-------------------+---------------+-------------------+
|Affected Product(s)|Version(s) |Applicable Editions|
+-------------------+---------------+-------------------+
|IBM Db2 |11.5.0 - 11.5.9|Server |
+-------------------+---------------+-------------------+
|IBM Db2 |12.1.0 - 12.1.4|Server |
+-------------------+---------------+-------------------+
Linux is affected. Unix and Windows are not affected.
Earlier releases (11.1, 10.5, 10.1, 9.7 etc.) may also be affected, but they
are no longer supported. Any older version not mentioned above is not
supported.
Remediation/Fixes
Customers running any vulnerable affected level of an affected Program, V11.5,
and V12.1, 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 level for each impacted release: V11.5.9, and V12.1.4. They can be
applied to any affected level of the appropriate release to remediate this
vulnerability.
+-------+------------+--------+-----------------------------------------------+
|Release|Fixed in mod|APAR |Download URL |
| |pack | | |
+-------+------------+--------+-----------------------------------------------+
|V11.5 |TBD |DT459588|Special Build #79671 or later for V11.5.9 |
| | | |available at this link: |
| | | |https://www.ibm.com/support/pages/node/7087189 |
+-------+------------+--------+-----------------------------------------------+
| | | |Special Build #80714 or later for V12.1.4 |
|V12.1 |TBD |DT459588|available at this link: |
| | | |https://www.ibm.com/support/pages/node/7267513 |
+-------+------------+--------+-----------------------------------------------+
IBM does not disclose key Db2 functionality nor replication steps for a
vulnerability to avoid providing too much information to any potential
malicious attacker. IBM does not want to enable a malicious attacker with
sufficient knowledge to craft an exploit of the vulnerability.
Workarounds and Mitigations
None
Published Security Vulnerabilities for DB2 for Linux, UNIX, and Windows
including Special Build information
Acknowledgement
Change History
15 Apr 2026: 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.
Disclaimer
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. In addition to other efforts to
address potential vulnerabilities, IBM periodically updates the record of
components contained in our product offerings. As part of that effort, if IBM
identifies previously unidentified packages in a product/service inventory, we
address relevant vulnerabilities regardless of CVE date. Inclusion of an older
CVEID does not demonstrate that the referenced product has been used by IBM
since that date, nor that IBM was aware of a vulnerability as of that date. We
are making clients aware of relevant vulnerabilities as we become aware of
them. "Affected Products and Versions" referenced in IBM Security Bulletins are
intended to be only products and versions that are supported by IBM and have
not passed their end-of-support or warranty date. Thus, failure to reference
unsupported or extended-support products and versions in this Security Bulletin
does not constitute a determination by IBM that they are unaffected by the
vulnerability. Reference to one or more unsupported versions in this Security
Bulletin shall not create an obligation for IBM to provide fixes for any
unsupported or extended-support products or versions.
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