CVE-2025-36253 Multiple Vulnerabilities in IBM Concert Software.

Medium 5.9 Published 2 Feb 2026 Updated 4 Feb 2026

Weak cryptographic algorithms in IBM Concert allow attackers to decrypt highly sensitive information.

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-2025-36253?

CVE-2025-36253 is a medium-severity vulnerability in Ibm Concert, published on 2 Feb 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 2.1.0 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information.

Weakness: CWE-759

Which versions are affected by CVE-2025-36253?

It affects 1 product.

Products include Ibm Concert.

How do I fix CVE-2025-36253?

No fix has been published for CVE-2025-36253 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-36253 being exploited?

There is no known exploitation of CVE-2025-36253 in the wild and no public exploit code.

All Ibm Concert vulnerabilities

Sources

Also known as GHSA-9cpp-gf7m-944g.