CVE-2026-101962 Denial of service in Junos OS
An attacker can crash the routing protocol daemon by sending malformed BGP EVPN updates, requiring EVPN signaling to be enabled.
- 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-2026-101962?
CVE-2026-101962 is a high-severity denial of service vulnerability in Juniper Networks Junos OS, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An Improper Handling of Length Parameter Inconsistency vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker sending a specifically malformed BGP EVPN multicast update which is attempted to be readvertised to cause an rpd crash.
Weakness: CWE-130
Which versions are affected by CVE-2026-101962?
How do I fix CVE-2026-101962?
No fix has been published for CVE-2026-101962 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-2026-101962 being exploited?
There is no known exploitation of CVE-2026-101962 in the wild and no public exploit code.
Sources
Also known as GHSA-hqcv-28ww-gfhc.