IBM MQ and MQ Appliance 7.1, 7.5, 8.0, 9.0 LTS, 9.1 LTS, and 9.1 C are vulnerable to a denial of service attack due to an error within the…

published 2020-06-16 6y ago modified 2026-06-17 4mo ago also EUVD-2020-25557

cvss: 5.9; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.6%; EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits: 0; none known

IBM MQ and MQ Appliance 7.1, 7.5, 8.0, 9.0 LTS, 9.1 LTS, and 9.1 C are vulnerable to a denial of service attack due to an error within the Data Conversion logic. IBM X-Force ID: 177081.

Patch / fix

fixed in 1

ibm mq 8.0.0.15, 9.0.0.10, 9.1.0.5, 9.1.5

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Exploit prediction

1.60% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.9	CVSS:3.0/AV:N/AC:H/I:N/PR:N/S:U/A:H/UI:N/C:N/E:U/RC:C/RL:O
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.0	5.9	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

IBM WebSphere MQ
IBM MQ

References

ibm.com /support/pages/node/6223914
vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/177081
vdb-entry, vendor-advisory

Sources

CVE List CVE-2020-4310
NVD CVE-2020-4310

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