CVE-2026-2311

Name: CVE-2026-2311
Creator: NVD / NIST
Published: 2026-04-30T22:16:25.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.20%

Last modified Jun 17, 2026

CVE-2026-2311 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.20%

9.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Ibm	I	7.2
Ibm	I	7.3
Ibm	I	7.4
Ibm	I	7.5
Ibm	I	7.6

References

https://www.ibm.com/support/pages/node/7269560Vendor Advisory

Timeline

Published: Apr 30, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-2311?

How severe is CVE-2026-2311?

CVE-2026-2311 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.

How do I fix CVE-2026-2311?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-2311?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST