CVE-2026-101978 Command injection in Junos OS Evolved
An attacker on the management LAN can execute root commands via a crafted gRPC response during zero-touch provisioning.
- 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-2026-101978?
CVE-2026-101978 is a high-severity command injection vulnerability in Juniper Networks Junos OS Evolved, 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 OS Command Injection vulnerability in the bootzd zero-touch provisioning daemon of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated attacker on the management LAN to execute commands as root via a crafted gRPC response.
Weakness: CWE-78
Which versions are affected by CVE-2026-101978?
How do I fix CVE-2026-101978?
No fix has been published for CVE-2026-101978 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-101978 being exploited?
There is no known exploitation of CVE-2026-101978 in the wild and no public exploit code.
Sources
Also known as GHSA-pr89-h5hv-gj8j.