CVE-2026-6928 Multiple Vulnerabilities in IBM Concert Software

Critical 9.8 Published 23 Sep 2026 Updated 25 Sep 2026

Attackers can exploit a use-after-free flaw in IBM Concert to execute arbitrary code or crash the application.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-6928?

CVE-2026-6928 is a critical use after free vulnerability in Ibm Concert, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM Concert 1.0.0 through 3.0.0 references or accesses memory after it has been freed. This allows an attacker who can influence program execution or input may exploit this condition to corrupt memory, cause application crashes, or execute arbitrary code.

Weakness: CWE-416

Which versions are affected by CVE-2026-6928?

It affects 1 product.

Products include Ibm Concert.

How do I fix CVE-2026-6928?

No fix has been published for CVE-2026-6928 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-6928 being exploited?

There is no known exploitation of CVE-2026-6928 in the wild and no public exploit code.

All Ibm Concert vulnerabilities

Sources

Also known as GHSA-7h6c-6c8f-m5jg.