CVE-2026-102040 Junos OS and Junos OS Evolved: An attacker crashes the routing daemon when co-routed bidirectional RSVP LSPs are used
An adjacent attacker can crash the routing daemon causing denial of service when co-routed bidirectional RSVP LSPs are configured.
- 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-2026-102040?
CVE-2026-102040 is a high-severity 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
A NULL Pointer Dereference vulnerability in the rpd routing daemon of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to crash the routing daemon and cause a denial of service via an RSVP Path message.
Weakness: CWE-476
Which versions are affected by CVE-2026-102040?
How do I fix CVE-2026-102040?
No fix has been published for CVE-2026-102040 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-102040 being exploited?
There is no known exploitation of CVE-2026-102040 in the wild and no public exploit code.
Sources
Also known as GHSA-mrj7-7xm6-68qr.