What is CVE-2026-8834?

CVE-2026-8834 is a high-severity vulnerability in Ibm Aix, classified under Heap-based Buffer Overflow. CVSS score: 8.0/10. Published 2026-05-26.

How severe is CVE-2026-8834?

High severity. CVSS v3 base score is 8.0 out of 10.

Buffer overflow in Ibm Aix

CVE-2026-8834

IBM HTTP Server 8.5, and 9.0 contains a buffer overflow vulnerability. A privileged user, authenticated to the Administration Server, could exploit this vulnerability to execute remote code or cause a denial of service.

Vulnerability class: Buffer Overflow

EPSS: 0.000 (0.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Aix
Ibm Http Server — versions 8.5.0, 9.0
Ibm Http_server
Ibm Z\/os
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

psirt@us.ibm.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-8834?: CVE-2026-8834 is a high-severity vulnerability in Ibm Aix, classified under Heap-based Buffer Overflow. CVSS score: 8.0/10. Published 2026-05-26.
How severe is CVE-2026-8834?: High severity. CVSS v3 base score is 8.0 out of 10.