CVE-2026-102039 Null dereference in Junos OS
An adjacent attacker can cause a routing process denial of service in Junos OS by sending malformed RSVP messages when GMPLS EVPL dynamic transport is enabled.
- 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-2026-102039?
CVE-2026-102039 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 process of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent attacker to cause a denial of service via a malformed RSVP Path message received on an EVPL LMP control channel.
Weakness: CWE-476
Which versions are affected by CVE-2026-102039?
How do I fix CVE-2026-102039?
No fix has been published for CVE-2026-102039 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-102039 being exploited?
There is no known exploitation of CVE-2026-102039 in the wild and no public exploit code.
Sources
Also known as GHSA-xr8h-435q-48j7.