What is CVE-2026-82340?

CVE-2026-82340 is a critical-severity vulnerability in IBM Guardium Data Protection, classified under Code Injection. CVSS score: 9.8/10. Published 2026-09-18.

How severe is CVE-2026-82340?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in IBM Guardium Data Protection

CVE-2026-82340

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.

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Guardium Data Protection — versions 12.2

Weakness classification (CWE)

CWE-94 — Code Injection

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-82340?: CVE-2026-82340 is a critical-severity vulnerability in IBM Guardium Data Protection, classified under Code Injection. CVSS score: 9.8/10. Published 2026-09-18.
How severe is CVE-2026-82340?: Critical severity. CVSS v3 base score is 9.8 out of 10.