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.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00019.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Juniper Networks
  • Junos Os
  • Junos Os Evolved

No data.

No data.

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Vendors Products
Juniper Networks
  • Junos Os
  • Junos Os Evolved
Advisories
Source ID Title
EUVD EUVD EUVD-2025-21143 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.
Fixes

Solution

The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 22.4R3-S7-EVO, 23.2R2-S4-EVO, 23.4R2-S5-EVO, 24.2R2-S1-EVO, 24.4R2-EVO, 25.2R1-EVO; Junos OS: 22.2R3-S7, 22.4R3-S7, 23.2R2-S4, 23.4R2-S4, 24.2R2-S1, 24.4R1-S2, 24.4R2, 25.2R1, and all subsequent releases.

Workaround

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.

References
Link Providers
https://supportportal.juniper.net/JSA100096 cve-icon cve-icon
History

Tue, 15 Jul 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.0001}

Fri, 11 Jul 2025 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Junos OS and Junos OS Evolved: Annotate configuration command can be used to change the configuration
Weaknesses CWE-140
References
Metrics cvssV3_1

{'score': 5.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/R:U/RE:M'}
cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published:

Updated: 2025-09-24T08:03:12.314Z

Reserved: 2025-06-23T18:23:44.546Z

Link: CVE-2025-52989

cve-icon Vulnrichment

Updated: 2025-07-11T16:04:28.819Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-07-11T16:15:26.367

Modified: 2025-07-15T13:14:49.980

Link: CVE-2025-52989

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T23:05:34Z