CVE-2025-59975 Junos Space: Flooding device with inbound API calls leads to WebUI and CLI management access DoS
Unauthenticated attackers can cause a denial of service in Junos Space by flooding API calls, blocking management access until a reboot.
- 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-2025-59975?
CVE-2025-59975 is a high-severity denial of service vulnerability in Juniper Junos Space, published on 9 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An Uncontrolled Resource Consumption vulnerability in the HTTP daemon (httpd) of Juniper Networks Junos Space allows an unauthenticated network-based attacker flooding the device with inbound API calls to consume all resources on the system, leading to a Denial of Service (DoS).
After continuously flooding the system with inbound connection requests, all available file handles become consumed, blocking access to the system via SSH and the web user interface (WebUI), resulting in a management interface DoS. A manual reboot of the system is required to restore functionality.
This issue affects Junos Space: * all versions before 22.2R1 Patch V3, * from 23.1 before 23.1R1 Patch V3.
Weakness: CWE-400
Which versions are affected by CVE-2025-59975?
It affects 1 product.
Products include Juniper Junos Space.
How do I fix CVE-2025-59975?
No fix has been published for CVE-2025-59975 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-2025-59975 being exploited?
There is no known exploitation of CVE-2025-59975 in the wild and no public exploit code.
Other vulnerabilities in Juniper Junos Space
Sources
Also known as GHSA-834q-vmvq-2qjx.