CVE-2026-10743 IBM MQ Race Condition
An authenticated attacker can cause denial of service or memory corruption in IBM MQ via improper buffer validation in MQOPEN operations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-10743?
CVE-2026-10743 is a high-severity vulnerability in IBM MQ Advanced container images, published on 19 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM MQ could allow an authenticated attacker to cause a denial of service or corrupt memory due to improper validation of buffer sizes in MQOPEN operations.
Weakness: CWE-1223
Which versions are affected by CVE-2026-10743?
It affects 2 products.
Products include Ibm Mq Operator, Ibm Supplied Mq Advanced Container Images.
How do I fix CVE-2026-10743?
No fix has been published for CVE-2026-10743 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-10743 being exploited?
There is no known exploitation of CVE-2026-10743 in the wild and no public exploit code.
Other vulnerabilities in IBM MQ Advanced container images
Sources
Also known as GHSA-w4mc-h76j-j926.