CVE-2026-14991 IBM DataPower Gateway Out-of-bounds Write
A local user can exploit a buffer overflow in IBM DataPower Gateway to execute arbitrary code on the system.
- 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-2026-14991?
CVE-2026-14991 is a critical memory corruption vulnerability in Ibm Datapower Gateway, published on 8 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM DataPower Gateway 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2 is vulnerable to a buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.
Weakness: CWE-787
Which versions are affected by CVE-2026-14991?
It affects 1 product.
Products include Ibm Datapower Gateway.
How do I fix CVE-2026-14991?
No fix has been published for CVE-2026-14991 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-2026-14991 being exploited?
There is no known exploitation of CVE-2026-14991 in the wild and no public exploit code.
Other vulnerabilities in Ibm Datapower Gateway
Sources
Also known as GHSA-9pvw-5fvv-vq8h.