CVE-2026-8852
Analyzed Analyzed - Analysis Complete
Denial of Service in IBM HTTP Server via mod_fastcgi

Publication date: 2026-05-26

Last updated on: 2026-05-26

Assigner: IBM Corporation

Description
IBM HTTP Server 8.5, and 9.0 is vulnerable to denial of service via the optional module mod_fastcgi module.
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Meta Information
Published
2026-05-26
Last Modified
2026-05-26
Generated
2026-06-16
AI Q&A
2026-05-26
EPSS Evaluated
2026-06-14
NVD
CVE-2026-8852
EUVD
EUVD-2026-31896
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
ibm http_server From 8.5.0.0 (inc) to 8.5.5.30 (exc)
ibm http_server From 9.0.0.0 (inc) to 9.0.5.29 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-617 The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
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Executive Summary

This vulnerability affects IBM HTTP Server versions 8.5 and 9.0. It is related to the optional mod_fastcgi module, which can be exploited to cause a denial of service (DoS) condition.

Impact Analysis

The impact of this vulnerability is a denial of service, meaning that an attacker could cause the IBM HTTP Server to become unavailable or unresponsive by exploiting the mod_fastcgi module.

Compliance Impact

The vulnerability in IBM HTTP Server 8.5 and 9.0 affects availability due to a denial of service via the optional mod_fastcgi module, but it does not impact confidentiality or integrity.

Since the vulnerability only affects availability and does not compromise data confidentiality or integrity, its direct impact on compliance with standards like GDPR or HIPAA—which primarily focus on protecting personal data confidentiality and integrity—is limited.

However, availability is also a component of these regulations, so prolonged denial of service could potentially affect compliance related to system availability requirements.

Mitigation Strategies

To mitigate the denial of service vulnerability in IBM HTTP Server 8.5 and 9.0 related to the mod_fastcgi module, it is recommended to apply the appropriate interim fixes or upgrade to the latest fix packs.

  • For version 9.0, upgrade to Fix Pack 9.0.5.29 or later.
  • For version 8.5, upgrade to Fix Pack 8.5.5.30 or later.
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