CVE-2025-52989: Annotate configuration command can be used to change the configuration

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 0	22.2R3-S7 or later
Junos OS 22.4	22.4R3-S7 or later
Junos OS 23.2	23.2R2-S4 or later
Junos OS 23.4	23.4R2-S4 or later
Junos OS 24.2	24.2R2-S1 or later
Junos OS 24.4	24.4R1-S2, 24.4R2 or later
Junos OS Evolved 0	22.4R3-S7-EVO or later
Junos OS Evolved 23.2-EVO	23.2R2-S4-EVO or later
Junos OS Evolved 23.4-EVO	23.4R2-S5-EVO or later
Junos OS Evolved 24.2-EVO	24.2R2-S1-EVO or later
Junos OS Evolved 24.4-EVO	24.4R2-EVO or later

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

What it is

An Improper Neutralization of Delimiters vulnerability in the UI of Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with high privileges to modify the system configuration.

A user with limited configuration and commit permissions, using a specifically crafted annotate configuration command, can change any part of the device configuration.

This issue affects:

Junos OS:

all versions before 22.2R3-S7,
22.4 versions before 22.4R3-S7,
23.2 versions before 23.2R2-S4,
23.4 versions before 23.4R2-S4,
24.2 versions before 24.2R2-S1,
24.4 versions before 24.4R1-S2, 24.4R2;

Junos OS Evolved:

all versions before 22.4R3-S7-EVO,
23.2-EVO versions before 23.2R2-S4-EVO,
23.4-EVO versions before 23.4R2-S5-EVO,
24.2-EVO versions before 24.2R2-S1-EVO

24.4-EVO versions before 24.4R2-EVO.

Workarounds

There are no known workarounds for this issue.

To reduce the risk of exploitation 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.