Is CVE-2026-3621 actively exploited?

CVE-2026-3621 has no public evidence of in-the-wild exploitation as of 2026-04-24.

What is the CVSS score for CVE-2026-3621?

CVE-2026-3621 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-3621?

Patch guidance is available from IBM security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-3621.

Which products are affected by CVE-2026-3621?

1 product: IBM Awaiting Analysis.

Fix CVE-2026-3621 - HIGH IBM Awaiting Analysis

Description

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.4 IBM WebSphere Application Server Liberty is vulnerable to identity spoofing under limited conditions when an application is deployed without authentication and authorization configured.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: high
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-269 · Improper Privilege Management

Metadata

Primary Vendor: IBM
Published: 4/23/2026
Last Modified: 4/24/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-3621

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary