IBM MQ Internet Pass-Thru 2.1 and 9.2 could allow a remote user to cause a denial of service by sending malformed MQ data requests which wo…

published 2021-01-22 5y ago modified 2026-06-17 4mo ago also EUVD-2020-26013

cvss: 5.9; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

IBM MQ Internet Pass-Thru 2.1 and 9.2 could allow a remote user to cause a denial of service by sending malformed MQ data requests which would consume all available resources. IBM X-Force ID: 188093.

Patch / fix

links 1

ibm.com/support/pages/node/6406254 advisory

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Exploit prediction

1.49% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.9	CVSS:3.0/C:N/PR:N/AV:N/S:U/A:H/UI:N/I:N/AC:H/RC:C/E:U/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 MQ Internet Pass-Thru

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption

References

ibm.com /support/pages/node/6406254
patch, vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/188903
vdb-entry, vendor-advisory

Sources

CVE List CVE-2020-4766
NVD CVE-2020-4766

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