PT-2026-43368 · Ibm · Ibm Http Server

Published 2026-05-26 · Updated 2026-05-28 · CVE-2026-8855

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions IBM HTTP Server version 8.5 IBM HTTP Server version 9.0

Description Remote code execution and denial of service are possible in configurations that utilize TLS mutual authentication, also known as client authentication, which is a process where both the client and server verify each other's digital certificates.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

DoS

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-8855

Affected Products

Ibm Http Server

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-8855 · Security Note
• https://ibm.com/support/pages/node/7274065 · Patch, Vendor Advisory
• https://twitter.com/DFIR_Lab/status/2059801130918375708 · Twitter Post
• https://twitter.com/CVEnew/status/2059337200160952447 · Twitter Post