What is CVE-2026-21916?

CVE-2026-21916 is a high-severity vulnerability in Juniper Networks Junos Os, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 7.3/10. Published 2026-04-09.

How severe is CVE-2026-21916?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Juniper Networks Junos Os

CVE-2026-21916

A UNIX Symbolic Link (Symlink) Following vulnerability in the CLI of Juniper Networks Junos OS allows a local, authenticated attacker with low privileges to escalate their privileges to root which will lead to a complete compromise of the…

EPSS: 0.000 (2.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Juniper Networks Junos Os — versions 0, 23.4, 24.2

Weakness classification (CWE)

CWE-61 — UNIX Symbolic Link (Symlink) Following

References

kb.juniper.net/JSA107807 (vendor-advisory)

Frequently asked questions

What is CVE-2026-21916?: CVE-2026-21916 is a high-severity vulnerability in Juniper Networks Junos Os, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 7.3/10. Published 2026-04-09.
How severe is CVE-2026-21916?: High severity. CVSS v3 base score is 7.3 out of 10.