IBMCVE-2026-12667
IBM MQ: denial of service
High7.1CVE-2026-12667 · Published Sep 15, 2026 · updated Sep 16, 2026
IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow an authenticated attacker to read files from a vulnerable .NET client or cause limited denial of service due to improper handling of XML external entities in RFH2 folder parsing.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| MQ Product | >= 9.1.0.0, <= 9.1.0.37 LTS | No fix yet |
| >= 9.2.0.0, <= 9.2.0.43 LTS | No fix yet | |
| >= 9.3.0.0, <= 9.3.0.41 LTS | No fix yet | |
| >= 9.3.0.0, <= 9.3.5.1 CD | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-611
More IBM advisories
All IBM| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 15 | IBM Cloud Pak for Business Automation: cross-site scripting | Medium5.4 | No fix yet |
| Sep 15 | IBM Business Automation Workflow containers and traditional: XML external entity | High7.1 | No fix yet |
| Sep 15 | IBM Security Verify Access: denial of service | High7.5 | No fix yet |
| Sep 15 | IBM MQ: information disclosure | High8.1 | No fix yet |
| Sep 15 | IBM MQ: code execution | High8.8 | No fix yet |
| Sep 15 | IBM Business Automation Workflow: missing authorization | Medium5.4 | No fix yet |