Vulnerability 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 Score
8.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ibm | Http Server | >= 8.5.0.0, < 8.5.5.30 |
| Ibm | Aix | - |
| Ibm | Z\/Os | - |
| Linux | Linux Kernel | - |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- https://www.ibm.com/support/pages/node/7274065Vendor Advisory
FAQ
What is CVE-2026-8855?
CVE-2026-8855 is a vulnerability with a CVSS score of 8.1 (HIGH). 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).
How severe is CVE-2026-8855?
CVE-2026-8855 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-8855?
Check the references section above for vendor advisories and patch information. Affected products include: Ibm Http Server, Ibm Aix, Ibm Z\/Os, Linux Linux Kernel, Microsoft Windows.