CVE-2020-4465

Name: CVE-2020-4465
Creator: NVD / NIST
Published: 2020-07-28T12:15:12.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.91%

Last modified Jun 17, 2026

CVE-2020-4465 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. IBM MQ, IBM MQ Appliance, and IBM MQ for HPE NonStop 8.0, 9.1 CD, and 9.1 LTS is vulnerable to a buffer overflow vulnerability due to an error within the channel processing code. A remote attacker could overflow the buffer using an older client and cause a denial of service. EPSS estimates a 1.91% chance of exploitation in the next 30 days.

Description

IBM MQ, IBM MQ Appliance, and IBM MQ for HPE NonStop 8.0, 9.1 CD, and 9.1 LTS is vulnerable to a buffer overflow vulnerability due to an error within the channel processing code. A remote attacker could overflow the buffer using an older client and cause a denial of service. IBM X-Force ID: 181562.

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

1.91%

77.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Ibm	Mq Appliance	>= 8.0, < 8.0.0.15
Ibm	Mq Appliance	>= 9.1.0.0, < 9.1.0.6
Ibm	Mq Appliance	>= 9.1.0.0, < 9.2.0.0

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/181562VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6252783Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/181562VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6252783Patch, Vendor Advisory

Timeline

Published: Jul 28, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-4465?

How severe is CVE-2020-4465?

CVE-2020-4465 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.91% probability of exploitation in the next 30 days.

How do I fix CVE-2020-4465?

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-2020-4465?

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

Scan your code now

Source: NVD / NIST