CVE-2023-27555

Name: CVE-2023-27555
Creator: NVD / NIST
Published: 2023-04-28T18:15:26.25+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.59%

Last modified Jun 17, 2026

CVE-2023-27555 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 is vulnerable to a denial of service when attempting to use ACR client affinity for unfenced DRDA federation wrappers. IBM X-Force ID: 249187.. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

Description

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 is vulnerable to a denial of service when attempting to use ACR client affinity for unfenced DRDA federation wrappers. IBM X-Force ID: 249187.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.59%

43.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Ibm	Db2	>= 11.1, < 11.1.4
Ibm	Db2	>= 11.5, < 11.5.8
Ibm	Db2	10.5
Ibm	Db2	11.1.4

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/249187VDB Entry, Vendor Advisory
https://security.netapp.com/advisory/ntap-20230511-0010/
https://www.ibm.com/support/pages/node/6985683Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/249187VDB Entry, Vendor Advisory
https://security.netapp.com/advisory/ntap-20230511-0010/
https://www.ibm.com/support/pages/node/6985683Patch, Vendor Advisory

Timeline

Published: Apr 28, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-27555?

How severe is CVE-2023-27555?

CVE-2023-27555 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2023-27555?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-27555?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST