CVE-2026-101992 Junos OS and Junos OS Evolved: A BGP peer causes an rpd crash when automatic VPLS site ID is used
A configured BGP peer can crash the routing daemon in Junos OS by sending a specific VPLS signaling update, causing a denial of service.
- 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-2026-101992?
CVE-2026-101992 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 Improper Input Validation vulnerability in the routing protocol daemon (rpd) process of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP peer to cause an rpd crash via a BGP VPLS signaling update.
Weakness: CWE-20
Which versions are affected by CVE-2026-101992?
How do I fix CVE-2026-101992?
No fix has been published for CVE-2026-101992 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-2026-101992 being exploited?
There is no known exploitation of CVE-2026-101992 in the wild and no public exploit code.
Sources
Also known as GHSA-2qg7-r2pq-p9x6.