CVE-2019-4378

Name: CVE-2019-4378
Creator: NVD / NIST
Published: 2019-09-26T15:15:10.38+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.62%

Last modified Jun 17, 2026

CVE-2019-4378 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. IBM MQ 7.5.0.0 - 7.5.0.9, 7.1.0.0 - 7.1.0.9, 8.0.0.0 - 8.0.0.12, 9.0.0.0 - 9.0.0.6, 9.1.0.0 - 9.1.0.2, and 9.1.0 - 9.1.2 command server is vulnerable to a denial of service attack caused by an authenticated and authorized user using specially crafted PCF messages. IBM X-Force ID: 162084.. EPSS estimates a 1.62% chance of exploitation in the next 30 days.

Description

IBM MQ 7.5.0.0 - 7.5.0.9, 7.1.0.0 - 7.1.0.9, 8.0.0.0 - 8.0.0.12, 9.0.0.0 - 9.0.0.6, 9.1.0.0 - 9.1.0.2, and 9.1.0 - 9.1.2 command server is vulnerable to a denial of service attack caused by an authenticated and authorized user using specially crafted PCF messages. IBM X-Force ID: 162084.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.62%

73.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Ibm	Mq	>= 7.1.0.0, <= 7.1.0.9
Ibm	Mq	>= 7.5.0.0, <= 7.5.0.9
Ibm	Mq	>= 8.0.0.0, <= 8.0.0.12
Ibm	Mq	>= 9.0.0.0, <= 9.0.0.6
Ibm	Mq	>= 9.1.0.0, <= 9.1.2.0

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/162084Third Party Advisory, VDB Entry
https://supportcontent.ibm.com/support/pages/node/886885Permissions Required, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/162084Third Party Advisory, VDB Entry
https://supportcontent.ibm.com/support/pages/node/886885Permissions Required, Vendor Advisory

Timeline

Published: Sep 26, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-4378?

How severe is CVE-2019-4378?

CVE-2019-4378 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.62% probability of exploitation in the next 30 days.

How do I fix CVE-2019-4378?

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-2019-4378?

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

Scan your code now

Source: NVD / NIST