CVE-2026-101971 Junos OS and Junos OS Evolved: An attacker causes routing protocol daemon crash when OSPFv3 is enabled
An unauthenticated adjacent attacker can crash the routing daemon and corrupt heap memory via OSPFv3 messages on enabled broadcast interfaces.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-101971?
CVE-2026-101971 is a high-severity denial of service vulnerability in Juniper Networks Junos OS, published on 14 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An Allocation of Resources Without Limits or Throttling vulnerability in rpd, the routing protocol daemon, of Juniper Networks Junos OS and Junos OS Evolved platforms allows an unauthenticated adjacent attacker to cause a denial of service and heap memory corruption via OSPFv3 messages on an enabled broadcast interface.
Weakness: CWE-770
Which versions are affected by CVE-2026-101971?
How do I fix CVE-2026-101971?
No fix has been published for CVE-2026-101971 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-2026-101971 being exploited?
There is no known exploitation of CVE-2026-101971 in the wild and no public exploit code.
Sources
Also known as GHSA-pq6p-qx88-g7pj.