CVE-2026-84058 Multiple vulnerabilities affect the Sniffer component as part of IBM Guardium Data Protection

High 8.1 Published 8 Oct 2026 Updated 10 Oct 2026

A remote attacker can cause denial of service or execute arbitrary code on IBM Guardium Collectors via a crafted TDS packet.

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-2026-84058?

CVE-2026-84058 is a high-severity memory corruption vulnerability in Ibm Guardium Data Protection, published on 8 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM Guardium Data Protection 12.0, 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.

Weakness: CWE-119

Which versions are affected by CVE-2026-84058?

It affects 1 product.

Products include Ibm Guardium Data Protection.

How do I fix CVE-2026-84058?

No fix has been published for CVE-2026-84058 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-84058 being exploited?

There is no known exploitation of CVE-2026-84058 in the wild and no public exploit code.

All Ibm Guardium Data Protection vulnerabilities

Sources

Also known as GHSA-48h4-8xvm-v78r.