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Is your Progress Kemp Load Balancer secure against the December 2025 silent update?
Critical Security Advisory: Progress Kemp LoadMaster
System administrators managing Progress Kemp LoadMaster environments must take immediate action regarding a recently identified security vulnerability. While public details remain scarce, the manufacturer initiated a quiet remediation process on December 17, 2025. This creates a critical window for defensive action before the vulnerability becomes common knowledge.
The Silent Patch Window
A security gap currently exists between the availability of the fix and the public disclosure of the flaw. Progress officially scheduled the full public release of these vulnerability details for January 12, 2026. However, the company began distributing non-public updates to select partners and customers in mid-December. This strategy often aims to secure infrastructure before bad actors can reverse-engineer the vulnerability from a public announcement.
Risk Assessment
You are currently operating in a sensitive period. If your organization relies on Kemp LoadMaster products, you face heightened risk if you wait for the January announcement. Attackers often weaponize vulnerability data within hours of public disclosure. Patching now, during this “silent” phase, provides the strongest defense posture.
Immediate Action Plan
Do not wait for an automated notification. If you have not received an official security bulletin or email from Progress regarding this specific issue, you must be proactive.
- Verify Status: Check your current firmware version against releases dated after December 17, 2025.
- Contact Support: Reach out directly to your Kemp Progress partner or the manufacturer’s support channel. Explicitly request information regarding the non-public patches released in December.
- Deploy Updates: Download and apply the relevant patches immediately upon receipt.
Securing your load balancers before the January 12 deadline is essential to maintaining system integrity and preventing potential exploitation.