CVE-2026-2311

MEDIUMNVD 6.46.4—

6.4

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 v3: 6.4
EG Score: 6.4(high)
EPSS: 12.3%
KEV: Not listed

Published

April 30, 2026

Last Modified

May 1, 2026

Advisory Details (1)

Auto-updated Apr 30, 2026

No patch confirmed yet.

generic

Security Bulletin: IBM i is affected by a privilege escalation vulnerability in Web Administration GUI [CVE-2026-2311]

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-284Improper Access Control

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2026-2311?

CVE-2026-2311 is a medium vulnerability published on April 30, 2026. 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.

When was CVE-2026-2311 disclosed?

CVE-2026-2311 was first published in the National Vulnerability Database on April 30, 2026, with the most recent update on May 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-2311 actively exploited?

CVE-2026-2311 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-2311?

CVE-2026-2311 has a CVSS v3 base score of 6.4 (NVD).

How do I remediate CVE-2026-2311?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2311, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-2311

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Security Bulletin: IBM i is affected by a privilege escalation vulnerability in Web Administration GUI [CVE-2026-2311]

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-2311?

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Advisory Details (1)

Frequently asked(5)

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