CVE-2026-8856 | BDVDB-2026-334949 Detail

IBMHTTP Server

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

CWE-400 Uncontrolled Resource Consumption

References#

https://www.ibm.com/support/pages/node/7274065

Exploit#

No public exploit known

History#

Version 12026-05-26Record published in the CVE List.
Version 22026-05-27Most recent update recorded in the CVE List.

Published

Published: 2026-05-26
Last modified: 2026-05-27

Vendor information

Vendor: IBM
Product: HTTP Server

All IBM vulnerabilities

Score

7.7 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 9.4.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Denial of Service

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 8.5.0 and <= Interim Fix 002
Fixed
Not stated
Vulnerable
9.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.7 High

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).