CVE-2026-10747 IBM MQ Appliance is affected by a heap buffer overflow vulnerability in protocol message processing
Remote attackers can trigger a heap buffer overflow in IBM MQ Appliance to execute arbitrary code or cause denial of service before authentication.
- 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-2026-10747?
CVE-2026-10747 is a critical memory corruption vulnerability in IBM MQ Appliance, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM MQ Appliance could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer overflow in protocol message processing before authentication.
Weakness: CWE-122
Which versions are affected by CVE-2026-10747?
How do I fix CVE-2026-10747?
No fix has been published for CVE-2026-10747 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-2026-10747 being exploited?
There is no known exploitation of CVE-2026-10747 in the wild and no public exploit code.
Sources
Also known as GHSA-xp86-qf4h-97h5.