Progress Software Kemp LoadMaster apiuser Uninitialized Memory Remote Code Execution Vulnerability

June 9th, 2026
ZDI-26-342 ZDI-CAN-30437

CVE ID

CVE-2026-8037

CVSS Score

9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Progress Software

Affected Products

Kemp LoadMaster

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Progress Software Kemp LoadMaster. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of the apiuser parameter provided to the accessv2 endpoint. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of root.

Additional Details

Progress Software has issued an update to correct this vulnerability. More details can be found at:
https://docs.progress.com/bundle/release-notes_loadmaster-7-2-63-2/page/Introduction.html

Disclosure Timeline

  • 2026-04-15 - Vulnerability reported to vendor
  • 2026-06-09 - Coordinated public release of advisory
  • 2026-06-09 - Advisory Updated

Credit

Syed Ibrahim Ahmed of TrendAI Research

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