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NVD HIGH: CVE-2026-21916 — A UNIX Symbolic Link (Symlink) Following vulnerability in the CLI of Juniper Net...

·Source: NIST NVD

Updated:

Executive Summary

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 system. When after a user has performed a specific 'file link ...' CLI operation, another user commits (unrelated configuration changes), the first user can log

Analysis

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 system. When after a user has performed a specific 'file link ...' CLI operation, another user commits (unrelated configuration changes), the first user can login as root. This issue affects Junos OS: * all versions before 23.2R2-S7, * 23.4 versions before 23.4R2-S6, * 24.2 versions before 24.2R2-S3, * 24.4 versions before 24.4R2-S2, * 25.2 versions before 25.2R2. This issue does not affect versions 25.4R1 or later. CVSS Score: 7.3. Published: 2026-04-09T22:16:24.953.

Indicators of Compromise (1)

CVE (1)
CVE-2026-21916
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Apr 9, 2026. Verified by: NIST.

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