CVE-2026-8834 IBM HTTP Server is affected by multiple vulnerabilities

High 8.0 Published 26 May 2026 Updated 28 May 2026

A privileged user can exploit a buffer overflow in IBM HTTP Server to execute remote code or cause a denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-8834?

CVE-2026-8834 is a high-severity memory corruption vulnerability in IBM HTTP Server, published on 26 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-122

Which versions are affected by CVE-2026-8834?

It affects 1 product.

Products include Ibm Http Server.

How do I fix CVE-2026-8834?

No fix has been published for CVE-2026-8834 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-8834 being exploited?

There is no known exploitation of CVE-2026-8834 in the wild and no public exploit code.

Sources

Also known as GHSA-34j9-v3rv-pgg8.