IBM Guardium 12.x Collector: TDS PRELOGIN Buffer Overrun (DoS/Code)
CVE-2026-84058 Published on October 8, 2026
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.
Vulnerability Analysis
CVE-2026-84058 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2026-84058 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2026-84058
Want to know whenever a new CVE is published for IBM Guardium Data Protection? stack.watch will email you.
Affected Versions
IBM Guardium Data Protection:- Version 12.0 is affected.
- Version 12.1 is affected.
- Version 12.2 is affected.