Quick answers
- Is CVE-2026-11829 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-11829 being exploited in the wild.
- How severe is CVE-2026-11829?
- Medium severity, with a CVSS score of 6.5, published 19 October 2026.
- Which products and versions are affected?
- IBM MQ.
- Is there a fix for CVE-2026-11829?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-11829 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-11829?
- Check whether you run IBM Mq. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
IBM MQ's MQOPEN request handler fails to properly validate offset parameter values, allowing an authenticated attacker to trigger a denial-of-service condition. The vulnerability requires valid MQ credentials but does not require user interaction or special network conditions. Successful exploitation causes the queue manager process to crash, denying service to all connected clients.
Affected products
- IBM MQ
Timeline
- 2026-10-19: disclosed