CVE-2025-36421 Multiple vulnerabilities in IBM Controller
An attacker can intercept sensitive information via man-in-the-middle attacks due to clear text transmission in IBM Controller.
- 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-2025-36421?
CVE-2025-36421 is a medium-severity vulnerability in IBM Controller, 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 Controller 11.0.0 through 11.0.1 FP7, and 11.1.0 through 11.1.3 FP1 transmits data in clear text that could allow an attacker to obtain sensitive information using man in the middle techniques.
Weakness: CWE-319
Which versions are affected by CVE-2025-36421?
How do I fix CVE-2025-36421?
No fix has been published for CVE-2025-36421 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-36421 being exploited?
There is no known exploitation of CVE-2025-36421 in the wild and no public exploit code.
Sources
Also known as GHSA-4fr9-cr7w-7w6w.