IBM MQ 7.5, 8.0, 9.0, 9.1, 9.2 LTS, and 9.2 CD could allow a remote attacker to execute arbitrary code on the system, caused by an unsafe d…

published 2021-01-28 5y ago modified 2026-06-17 4mo ago also EUVD-2020-25929

cvss: 8.1; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 7.6%; EPSS 7.6% chance of exploitation in 30 days, percentile 94%
public exploits: 0; none known

IBM MQ 7.5, 8.0, 9.0, 9.1, 9.2 LTS, and 9.2 CD could allow a remote attacker to execute arbitrary code on the system, caused by an unsafe deserialization of trusted data. An attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 186509.

Patch / fix

links 1

ibm.com/support/pages/node/6408626 advisory

Is CVE-2020-4682 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

7.55% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	8.1	CVSS:3.0/AC:H/I:H/S:U/C:H/UI:N/A:H/AV:N/PR:N/RL:O/RC:C/E:U
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.0	8.1	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

IBM MQ

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

References

ibm.com /support/pages/node/6408626
patch, vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/186509
vdb-entry, vendor-advisory

Sources

CVE List CVE-2020-4682
NVD CVE-2020-4682

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.