Advisory Details

February 2nd, 2026

Progress Software Kemp LoadMaster delcert Command Injection Remote Code Execution Vulnerability

ZDI-26-051
ZDI-CAN-27594

CVE ID CVE-2025-13447
CVSS SCORE 7.1, AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Progress Software
AFFECTED PRODUCTS Kemp LoadMaster
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Progress Software Kemp LoadMaster. Authentication is required to exploit this vulnerability.

The specific flaw exists within the handling of user data passed to the delcert command. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the bal user.

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-7-2-62-2/page/Security-Updates.html
DISCLOSURE TIMELINE
  • 2025-10-29 - Vulnerability reported to vendor
  • 2026-02-02 - Coordinated public release of advisory
  • 2026-02-02 - Advisory Updated
CREDIT Alex Williams from Converge Technology Solutions
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