CVE-2025-33090 IBM Concert Software denial of service

High 7.5 Published 18 Aug 2025 Updated 18 Aug 2025

Remote attackers can cause denial of service in IBM Concert Software via resource exhaustion using crafted regular expressions.

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-2025-33090?

CVE-2025-33090 is a high-severity denial of service vulnerability in Ibm Concert, published on 18 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM Concert Software 1.0.0 through 1.1.0 could allow a remote attacker to cause a denial of service using a specially crafted regular expression that would cause excessive resource consumption.

Weakness: CWE-1333

Which versions are affected by CVE-2025-33090?

It affects 1 product.

Products include Ibm Concert.

How do I fix CVE-2025-33090?

No fix has been published for CVE-2025-33090 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-33090 being exploited?

There is no known exploitation of CVE-2025-33090 in the wild and no public exploit code.

All Ibm Concert vulnerabilities

Sources

Also known as GHSA-79wj-68r3-h5hv.