CVE-2020-4320 json
IBM MQ Appliance and IBM MQ AMQP Channels 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD do not correctly block or allow clients based on the certificat…
published 2020-06-16 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-25567
- cvss
- 5.3
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
IBM MQ Appliance and IBM MQ AMQP Channels 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD do not correctly block or allow clients based on the certificate distinguished name SSLPEER setting. IBM X-Force ID: 177403.
Patch / fix
- ibm mq 8.0.0.15, 9.0.0.10, 9.1.0.5, 9.1.5
Exploit prediction
0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 5.3 | CVSS:3.0/AV:N/I:N/AC:H/S:U/PR:L/A:H/C:N/UI:N/RC:C/RL:O/E:U |
| 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
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
ibm.com
/support/pages/node/5736885
vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/177403
vdb-entry, vendor-advisory
Sources
- CVE List CVE-2020-4320
- NVD CVE-2020-4320
Fencer Vulns 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.