Improper certificate validation in IBM MQ
Priority LOW 30CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.
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.
Why it matters now
EPSS 0.00723 54th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| IBM | MQ | 8.0; 9.0.LTS; 9.1.LTS; 9.1.CD | — | No fix listed | CNA |
- MQ VendorIBM Affected 8.0; 9.0.LTS; 9.1.LTS; 9.1.CD Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:mq:*:*:*:*:*:*:*:* | 8.0.0.0 to before 8.0.0.15 | Vulnerable | IBM |
| cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:* | 9.0.0.0 to before 9.0.0.10 | Vulnerable | IBM |
| cpe:2.3:a:ibm:mq:*:*:*:*:continuous_delivery:*:*:* | 9.1.0 to before 9.1.5 | Vulnerable | IBM |
| cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:* | 9.1.0.0 to before 9.1.0.5 | Vulnerable | IBM |
| cpe:2.3:o:hp:hp-ux:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Hewlett Packard Enterprise |
| cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Linux |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:oracle:solaris:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Oracle |
- cpe:2.3:a:ibm:mq:*:*:*:*:*:*:*:* Versions 8.0.0.0 to before 8.0.0.15 Vulnerable ·IBM
- cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:* Versions 9.0.0.0 to before 9.0.0.10 Vulnerable ·IBM
- cpe:2.3:a:ibm:mq:*:*:*:*:continuous_delivery:*:*:* Versions 9.1.0 to before 9.1.5 Vulnerable ·IBM
- cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:* Versions 9.1.0.0 to before 9.1.0.5 Vulnerable ·IBM
- cpe:2.3:o:hp:hp-ux:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Hewlett Packard Enterprise
- cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:oracle:solaris:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Oracle
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-4320
- 2026-10-03 Alias added: GHSA-h8p9-p3q3-7x89
References
More IBM Mq vulnerabilities
- TI-2020-03985 Deserialization of untrusted data in IBM MQ CVSS 3.1CRITICAL 9.8
- TI-2026-08787 IBM MQ queue manager is vulnerable to unauthenticated remote code execution CVSS 3.1CRITICAL 9.8
- TI-2022-06772 XML external entity injection in IBM MQ CVSS 3.1CRITICAL 9.1
- TI-2026-09821 IBM MQ queue manager is vulnerable to remote code execution CVSS 3.1HIGH 8.8
- TI-2026-09820 IBM MQ queue manager is vulnerable to remote code execution CVSS 3.1HIGH 8.8
- TI-2026-09317 IBM MQ queue manager is vulnerable to remote code execution CVSS 3.1HIGH 8.8
Sources
- CVE-2020-4320 · CVE Program
- CVE-2020-4320 · NVD
- FIRST EPSS
- GHSA-h8p9-p3q3-7x89 · GitHub Advisory Database · CC BY 4.0
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