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Junos EUVDEUVD-2025-21166

| CVE-2025-6549 MEDIUM
Incorrect Authorization (CWE-863)
2025-07-11 sirt@juniper.net
Juniper Authentication Bypass Junos
6.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

4
Patch available
Apr 16, 2026 - 05:29 EUVD
23.4R2-S5,22.4R3-S5,23.2R2-S3
EUVD ID Assigned
Mar 16, 2026 - 08:18 euvd
EUVD-2025-21166
Analysis Generated
Mar 16, 2026 - 08:18 vuln.today
CVE Published
Jul 11, 2025 - 16:15 nvd
MEDIUM 6.5

DescriptionCVE.org

An Incorrect Authorization vulnerability in the web server of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to reach the

Juniper Web Device Manager

(J-Web).

When Juniper Secure connect (JSC) is enabled on specific interfaces, or multiple interfaces are configured for J-Web, the J-Web UI is reachable over more than the intended interfaces. This issue affects Junos OS:

  • all versions before 21.4R3-S9,
  • 22.2 versions before 22.2R3-S5,
  • 22.4 versions before 22.4R3-S5,
  • 23.2 versions before 23.2R2-S3,
  • 23.4 versions before 23.4R2-S5,
  • 24.2 versions before 24.2R2.

Analysis

An Incorrect Authorization vulnerability in the web server of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to reach the

Juniper Web Device Manager

(J-Web).

When Juniper Secure connect (JSC) is enabled on specific interfaces, or multiple interfaces are configured for J-Web, the J-Web UI is reachable over more than the intended interfaces. This issue affects Junos OS:

  • all versions before 21.4R3-S9,
  • 22.2 versions before 22.2R3-S5,
  • 22.4 versions before 22.4R3-S5,
  • 23.2 versions before 23.2R2-S3,
  • 23.4 versions before 23.4R2-S5,
  • 24.2 versions before 24.2R2.

Technical ContextAI

This vulnerability is classified as Incorrect Authorization (CWE-863).

RemediationAI

Monitor vendor advisories for patches. Apply mitigations such as network segmentation, access restrictions, and monitoring.

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EUVD-2025-21166 vulnerability details – vuln.today
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