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CVE-2026-84058: IBM Guardium Data Protection may crash or be hijacked

CVE-2026-84058 · published 10 days ago

Summary

The Guardium Data Protection system that monitors database traffic can be fooled by a specially crafted Microsoft SQL Server connection request. If an attacker sends this malformed request to a Guardium Collector, the device could stop working or allow the attacker to run their own code on it. Apply the latest security updates from IBM as soon as possible to protect your environment.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
ibm	guardium data protection	12.0
ibm	guardium_data_protection	>= 12.0, <= 12.2 `cpe:2.3:a:ibm:guardium_data_protection::::::::`

Original advisory text

Multiple vulnerabilities affect the Sniffer component as part of IBM Guardium Data Protection

IBM Guardium Data Protection 12.0, 12.1, and 12.2 is vulnerable to a buffer overrun in the TDS (Microsoft SQL Server) PRELOGIN packet decoder. A remote attacker who can send a specially crafted TDS PRELOGIN packet to a network monitored by an IBM Guardium Collector may cause a denial of service or potentially execute arbitrary code on the Collector appliance.

References

https://www.ibm.com/support/pages/node/7291674 Patch Vendor Advisory

Fix within

Internet-facing 14 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit
Gives an attacker full control

Severity

9.8 Critical

Exploitation

<1% chance of attack within 30 days

Type

CWE-119Buffer Overflow

Timeline

Published8 Oct 2026

Updated15 Oct 2026

First seen8 Oct 2026

Sources

CVE-2026-84058 · NVD

CVE-2026-84058 · MITRE

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