CVE-2021-38958

Name: CVE-2021-38958
Creator: NVD / NIST
Published: 2021-11-30T17:15:11.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.21%

Last modified Jun 17, 2026

CVE-2021-38958 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. IBM MQ Appliance 9.2 CD and 9.2 LTS is affected by a denial of service attack caused by a concurrency issue. IBM X-Force ID: 212042. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

IBM MQ Appliance 9.2 CD and 9.2 LTS is affected by a denial of service attack caused by a concurrency issue. IBM X-Force ID: 212042

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.21%

11.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Ibm	Mq Appliance	9.2.0.0

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/212043VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6519420Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/212043VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6519420Patch, Vendor Advisory

Timeline

Published: Nov 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-38958?

IBM MQ Appliance 9.2 CD and 9.2 LTS is affected by a denial of service attack caused by a concurrency issue. IBM X-Force ID: 212042

How severe is CVE-2021-38958?

CVE-2021-38958 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.

How do I fix CVE-2021-38958?

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-2021-38958?

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

Scan your code now

Source: NVD / NIST