IBM MQ Appliance 9.2 CD and 9.2 LTS is vulnerable to a denial of service, caused by a buffer overflow.

published 2021-01-11 5y ago modified 2026-06-17 4mo ago also EUVD-2020-26116

cvss: 5.3; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits: 0; none known

IBM MQ Appliance 9.2 CD and 9.2 LTS is vulnerable to a denial of service, caused by a buffer overflow. A remote attacker could send a specially crafted SNMP query to cause the appliance to reload. IBM X-Force ID: 190831.

Patch / fix

links 1

ibm.com/support/pages/node/6398791 advisory

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Exploit prediction

1.84% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.3	CVSS:3.0/AC:H/I:N/AV:N/C:N/UI:N/PR:L/S:U/A:H/RC:C/E:U/RL:O
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA	3.0	5.3	CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected products

IBM MQ Appliance

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input

References

ibm.com /support/pages/node/6398791
patch, vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/190831
vdb-entry, vendor-advisory

Sources

CVE List CVE-2020-4869
NVD CVE-2020-4869

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