CVE-2026-8855: CWE-94 Improper Control of Generation of Code ('Code Injection') in IBM HTTP Server
IBM HTTP Server 8.5, and 9.0 is vulnerable to remote code execution and denial of service in configurations with TLS mutual authentication (client authentication).
AI Analysis
Technical Summary
CVE-2026-8855 is a high-severity vulnerability in IBM HTTP Server 8.5.0 and 9.0 involving improper control of code generation (CWE-94). It enables remote attackers to execute arbitrary code or cause denial of service on servers configured with TLS mutual authentication. The CVSS 3.1 vector indicates the attack requires network access with high attack complexity, no privileges, and no user interaction, impacting confidentiality, integrity, and availability. No patch or official remediation level has been disclosed by IBM as of the publication date.
Potential Impact
Successful exploitation can lead to remote code execution and denial of service on affected IBM HTTP Server instances configured with TLS mutual authentication. This compromises server confidentiality, integrity, and availability, potentially allowing attackers to fully control the server or disrupt its operation. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, consider disabling TLS mutual authentication if feasible or restricting network access to the affected servers to trusted sources to reduce exposure.
CVE-2026-8855: CWE-94 Improper Control of Generation of Code ('Code Injection') in IBM HTTP Server
Description
IBM HTTP Server 8.5, and 9.0 is vulnerable to remote code execution and denial of service in configurations with TLS mutual authentication (client authentication).
CVSS v3.1
Score 8.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8855 is a high-severity vulnerability in IBM HTTP Server 8.5.0 and 9.0 involving improper control of code generation (CWE-94). It enables remote attackers to execute arbitrary code or cause denial of service on servers configured with TLS mutual authentication. The CVSS 3.1 vector indicates the attack requires network access with high attack complexity, no privileges, and no user interaction, impacting confidentiality, integrity, and availability. No patch or official remediation level has been disclosed by IBM as of the publication date.
Potential Impact
Successful exploitation can lead to remote code execution and denial of service on affected IBM HTTP Server instances configured with TLS mutual authentication. This compromises server confidentiality, integrity, and availability, potentially allowing attackers to fully control the server or disrupt its operation. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, consider disabling TLS mutual authentication if feasible or restricting network access to the affected servers to trusted sources to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-05-18T16:27:17.633Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a15e03d891d628fdc67d9a0
Added to database: 05/26/2026, 18:02:37 UTC
Last enriched: 06/02/2026, 21:07:30 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 82
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