Juniper Junos OS/Junos OS Evolved UI delimiter

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Juniper Junos OS and Junos OS Evolved. Affected by this issue is some unknown functionality of the component UI. The manipulation leads to delimiter. This vulnerability is listed as CVE-2025-52989. The attack must be carried out locally. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Juniper Junos OS and Junos OS Evolved (affected version unknown). This issue affects an unknown functionality of the component UI. The manipulation with an unknown input leads to a delimiter vulnerability. Using CWE to declare the problem leads to CWE-140. The product does not neutralize or incorrectly neutralizes delimiters. Impacted is integrity, and availability. The summary by CVE 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.

The weakness was presented by Vincent Szurma as JSA100096. It is possible to read the advisory at supportportal.juniper.net. The identification of this vulnerability is CVE-2025-52989 since 06/23/2025. The exploitation is known to be easy. Attacking locally is a requirement. Additional levels of successful authentication are necessary for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 298254 (Juniper Junos OS Vulnerability (JSA100096)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (298254), EUVD (EUVD-2025-21143) and CERT Bund (WID-SEC-2025-1519). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Juniper MX Series
  • Juniper JUNOS
  • Juniper SRX Series
  • Juniper Security Director
  • Juniper Junos Space

Productinfo

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License

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.4
VulDB Temp Score: 3.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.1
CNA Vector (juniper): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Delimiter
CWE: CWE-140 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298254
Nessus Name: Juniper Junos OS Vulnerability (JSA100096)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/23/2025 CVE reserved
07/11/2025 +18 days Advisory disclosed
07/11/2025 +0 days VulDB entry created
02/07/2026 +211 days VulDB entry last update

Sourcesinfo

Vendor: juniper.net

Advisory: JSA100096
Researcher: Vincent Szurma
Status: Confirmed

CVE: CVE-2025-52989 (🔒)
GCVE (CVE): GCVE-0-2025-52989
GCVE (VulDB): GCVE-100-316163
EUVD: 🔒
CERT Bund: WID-SEC-2025-1519 - Juniper JUNOS: Mehrere Schwachstellen ermöglichen Privilegieneskalation

Entryinfo

Created: 07/11/2025 20:27
Updated: 02/07/2026 05:01
Changes: 07/11/2025 20:27 (78), 09/24/2025 14:02 (1), 10/12/2025 04:18 (7), 01/24/2026 07:56 (1), 02/07/2026 05:01 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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