Critical severity · published Apr 30, 2026
CVE-2026-2311
IBM i is affected by a privilege escalation vulnerability in Web Administration GUI []
9.8
CVSS
0.2%
EPSS
No
On KEV
Description
IBM i 7.6, 7.5, 7.4, 7.3, and 7.2 s vulnerable to privilege escalation caused by an invalid IBM i Web Administration GUI authorization check. A malicious actor could cause user-controlled code to run with administrator privilege.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
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
I
i · IBM
7.6.0 through 2.3.0; 7.5.0; 7.4.0; 7.3.0; 7.2.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2311
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2311
Vendor Advisory
https://www.ibm.com/support/pages/node/7269560
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