---
id: CVE-2026-84058
title: "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"
summary: "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 …"
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-119
published: '2026-10-08'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T22:17:33.313'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84058'
references:
  - url: 'https://www.ibm.com/support/pages/node/7291674'
    label: psirt@us.ibm.com
tags:
  - nvd
ingestedAt: '2026-10-08T23:16:47.397Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.