CVE-2025-11832 APIs Lack Rate Limiting

Critical 10.0 Published 15 Oct 2025 Updated 15 Oct 2025

Attackers can cause denial of service by flooding APIs due to missing rate limiting in Azure Access Technology devices.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-11832?

CVE-2025-11832 is a critical denial of service vulnerability in Azure Access Technology BLU-IC2, published on 15 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Allocation of Resources Without Limits or Throttling vulnerability in Azure Access Technology BLU-IC2, Azure Access Technology BLU-IC4 allows Flooding.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.

Weakness: CWE-770

Which versions are affected by CVE-2025-11832?

It affects 2 products.

Products include Azure-Access Blu-Ic2 Firmware, Azure-Access Blu-Ic4 Firmware.

How do I fix CVE-2025-11832?

No fix has been published for CVE-2025-11832 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-11832 being exploited?

There is no known exploitation of CVE-2025-11832 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-hf8v-4h5p-jj4q.