CVE-2024-39527: SRX Series: Low privileged user able to access sensitive information on file system

An Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the command-line interface (CLI) of Juniper Networks Junos OS on SRX Series devices allows a local, low-privileged user with access to the Junos CLI to view the contents of protected files on the file system.

Published 9 Oct 2024

Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.

Affected and fixed versions

Product / branch	Fixed in
Junos OS (SRX Series) 0	21.4R3-S8 or later
Junos OS (SRX Series) 22.2	22.2R3-S5 or later
Junos OS (SRX Series) 22.3	22.3R3-S4 or later
Junos OS (SRX Series) 22.4	22.4R3-S4 or later
Junos OS (SRX Series) 23.2	23.2R2-S2 or later
Junos OS (SRX Series) 23.4	23.4R2 or later

Always confirm against the vendor advisory, which lists every fixed hotfix.

What it is

Through the execution of crafted CLI commands, a user with limited permissions (e.g., a low privilege login class user) can access protected files that should not be accessible to the user. These files may contain sensitive information that can be used to cause further impact to the system.

This issue affects Junos OS on SRX Series:

All versions before 21.4R3-S8,
22.2 before 22.2R3-S5,
22.3 before 22.3R3-S4,
22.4 before 22.4R3-S4,
23.2 before 23.2R2-S2,
23.4 before 23.4R2.

Workarounds

Use access lists or firewall filters to limit access to the CLI only from trusted hosts and administrators.

Exploitation

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.