CVE-2026-17156 IBM App Connect Enterprise Toolkit is vulnerable to arbitrary code execution due to multiple CVEs
A local attacker can execute arbitrary code in IBM App Connect Enterprise due to insecure deserialization vulnerabilities.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-17156?
CVE-2026-17156 is a high-severity unsafe deserialization vulnerability in IBM App Connect Enterprise, published on 14 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
IBM App Connect Enterprise 13.0.1.0 through 13.0.8.0, and 12.0.1.0 through 12.0.12.27 could allow a local attacker to execute arbitrary code due to insecure deserialization.
Weakness: CWE-502
Which versions are affected by CVE-2026-17156?
How do I fix CVE-2026-17156?
No fix has been published for CVE-2026-17156 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-17156 being exploited?
There is no known exploitation of CVE-2026-17156 in the wild and no public exploit code.
Sources
Also known as GHSA-6qgq-ppgr-crqx.