CVE-2026-8633

Name: CVE-2026-8633
Creator: NVD / NIST
Published: 2026-05-26T18:16:56.513+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2026-8633 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to remote code execution in the Web Server Plug-ins, through a specially crafted request.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to remote code execution in the Web Server Plug-ins, through a specially crafted request.

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

0.85%

53.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Ibm	Websphere Application Server	>= 8.5.0.0, <= 8.5.5.29
Ibm	Websphere Application Server	>= 9.0.0.0, <= 9.0.5.27

References

https://www.ibm.com/support/pages/node/7274072Vendor Advisory

Timeline

Published: May 26, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-8633?

How severe is CVE-2026-8633?

CVE-2026-8633 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2026-8633?

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-2026-8633?

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

Scan your code now

Source: NVD / NIST