CVE-2025-36156 IBM InfoSphere Data Replication VSAM for z/OS Remote Source code execution
A local user can exploit a stack-based buffer overflow in IBM InfoSphere Data Replication to execute arbitrary code on the system.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-36156?
CVE-2025-36156 is a high-severity memory corruption vulnerability in IBM InfoSphere Data Replication VSAM for z/OS Remote Source, published on 7 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
IBM InfoSphere Data Replication VSAM for z/OS Remote Source 11.4 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local user with access to the files storing CECSUB or CECRM on the container could overflow the buffer and execute arbitrary code on the system.
Weakness: CWE-119
Which versions are affected by CVE-2025-36156?
It affects 1 product.
Products include Ibm Infosphere Data Replication Vsam for Z\/Os Remote Source.
How do I fix CVE-2025-36156?
No fix has been published for CVE-2025-36156 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-2025-36156 being exploited?
There is no known exploitation of CVE-2025-36156 in the wild and no public exploit code.
Sources
Also known as GHSA-28hx-m95w-h3jm.