CVE-2026-11828 IBM MQ Buffer Overflow
Remote attackers can cause denial of service in client applications via improper validation of queue name lengths in IBM MQ.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-11828?
CVE-2026-11828 is a medium-severity memory corruption vulnerability in IBM MQ Advanced container images, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM MQ could allow a remote attacker with queue manager control or man-in-the-middle access on unencrypted channels to cause a denial of service in client applications using asynchronous message consumption due to improper validation of queue name length values.
Weakness: CWE-120
Which versions are affected by CVE-2026-11828?
It affects 2 products.
Products include Ibm Mq Operator, Ibm Supplied Mq Advanced Container Images.
How do I fix CVE-2026-11828?
No fix has been published for CVE-2026-11828 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-11828 being exploited?
There is no known exploitation of CVE-2026-11828 in the wild and no public exploit code.
Other vulnerabilities in IBM MQ Advanced container images
Sources
Also known as GHSA-4q86-f785-82j9.