Medium severity · published Sep 18, 2026
CVE-2025-36421
Multiple vulnerabilities in IBM Controller
5.9
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Controller · IBM
11.0.0 through 11.0.1 FP7; 11.1.0 through 11.1.3 FP1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-36421
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-36421
www.ibm.com
https://www.ibm.com/support/pages/node/7287970
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