CVE-2019-4055

Name: CVE-2019-4055
Creator: NVD / NIST
Published: 2019-04-19T17:29:01.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.49%

Last modified Jun 17, 2026

CVE-2019-4055 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. IBM MQ 8.0.0.0 through 8.0.0.10, 9.0.0.0 through 9.0.0.5, and 9.1.0.0 through 9.1.1 is vulnerable to a denial of service attack within the TLS key renegotiation function. IBM X-Force ID: 156564.. EPSS estimates a 2.49% chance of exploitation in the next 30 days.

Description

IBM MQ 8.0.0.0 through 8.0.0.10, 9.0.0.0 through 9.0.0.5, and 9.1.0.0 through 9.1.1 is vulnerable to a denial of service attack within the TLS key renegotiation function. IBM X-Force ID: 156564.

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

2.49%

82.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Ibm	Mq	>= 8.0.0.0, <= 8.0.0.10
Ibm	Mq	>= 9.0.0.0, <= 9.0.0.5
Ibm	Mq	>= 9.1.0, <= 9.1.1
Ibm	Mq	>= 9.1.0.0, <= 9.1.0.1
Ibm	Mq Appliance	>= 8.0.0.0, <= 8.0.0.10
Ibm	Mq Appliance	>= 9.1.0, <= 9.1.1
Ibm	Mq Appliance	>= 9.1.0.0, <= 9.1.0.1

References

http://www.securityfocus.com/bid/108027Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/156564VDB Entry, Vendor Advisory
https://www.ibm.com/support/docview.wss?uid=ibm10870484Patch, Vendor Advisory
http://www.securityfocus.com/bid/108027Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/156564VDB Entry, Vendor Advisory
https://www.ibm.com/support/docview.wss?uid=ibm10870484Patch, Vendor Advisory

Timeline

Published: Apr 19, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-4055?

IBM MQ 8.0.0.0 through 8.0.0.10, 9.0.0.0 through 9.0.0.5, and 9.1.0.0 through 9.1.1 is vulnerable to a denial of service attack within the TLS key renegotiation function. IBM X-Force ID: 156564.

How severe is CVE-2019-4055?

CVE-2019-4055 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.49% probability of exploitation in the next 30 days.

How do I fix CVE-2019-4055?

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-2019-4055?

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

Scan your code now

Source: NVD / NIST