What is CVE-2026-101978?

CVE-2026-101978 is a high-severity vulnerability in Juniper Networks Junos OS Evolved, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-10-14.

How severe is CVE-2026-101978?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Juniper Networks Junos OS Evolved

CVE-2026-101978

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.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-10-14 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Juniper Networks Junos OS Evolved — versions 23.4X100

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

supportportal.juniper.net/JSA112250 (vendor-advisory)

Frequently asked questions

What is CVE-2026-101978?: CVE-2026-101978 is a high-severity vulnerability in Juniper Networks Junos OS Evolved, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-10-14.
How severe is CVE-2026-101978?: High severity. CVSS v3 base score is 8.8 out of 10.