CVE-2026-8856

CRITICAL EPSS 9.6%
Published May 26, 20261mo ago · Modified Jun 17, 20261w ago
9.1 CVSS 3.1
Critical
Find Similar
Published May 26, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service in configurations where an attacker has write access to parts of the server configuration.

CVSS Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
9.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-400 Uncontrolled Resource Consumption Resource Mgmt

Affected Products 6

VendorProductVersionRange
ibmhttp_server*≥8.5.0.0  –  <8.5.5.30
ibmhttp_server*≥9.0.0.0  –  <9.0.5.29
ibmaix*any
ibmz\/os*any
linuxlinux_kernel*any
microsoftwindows*any

References 1

  • ibm.com https://www.ibm.com/support/pages/node/7274065
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.