CVE-2026-82340 IBM Guardium Data Protection is affected by multiple vulnerabilities.

Critical 9.8 Published 18 Sep 2026 Updated 23 Sep 2026

A network attacker can achieve remote code execution on IBM Guardium Data Protection by sending crafted serialized messages to the CAS listener.

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-2026-82340?

CVE-2026-82340 is a critical unsafe deserialization vulnerability in Ibm Guardium Data Protection, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM Guardium Data Protection 12.2 is vulnerable to unauthenticated insecure deserialization and attacker-controlled reflective method dispatch in the Change Audit System (CAS) listener. A network attacker able to reach TCP port 16017 may submit crafted serialized messages and potentially cause unintended code execution in the Guardium appliance.

Weakness: CWE-94

Which versions are affected by CVE-2026-82340?

It affects 1 product.

Products include Ibm Guardium Data Protection.

How do I fix CVE-2026-82340?

No fix has been published for CVE-2026-82340 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2026-82340 being exploited?

There is no known exploitation of CVE-2026-82340 in the wild and no public exploit code.

All Ibm Guardium Data Protection vulnerabilities

Sources

Also known as GHSA-mf93-58gc-8fqq.