CVE-2025-6549Network attack vector

Unauthenticated J-Web exposure across unintended interfaces

Published Jul 11, 2025 · Updated Jul 11, 2025

Incorrect authorization in the J-Web server of Juniper Networks Junos OS allows remote attackers to reach the UI on unintended interfaces. Interface authorization exposes J-Web beyond the interfaces selected for web management when JSC is enabled or multiple J-Web interfaces are configured. An affected SRX Series device must use either configuration; the exposure enables limited reading and modification without service interruption.

CVSS severity6.9
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in the J-Web server of Juniper Networks Junos OS allows remote attackers to reach the UI on unintended interfaces. Interface authorization exposes J-Web beyond the interfaces selected for web management when JSC is enabled or multiple J-Web interfaces are configured. An affected SRX Series device must use either configuration; the exposure enables limited reading and modification without service interruption.

The record

CVE
CVE-2025-6549
Published
Jul 11, 2025
Updated
Jul 11, 2025
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-863, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <21.4R3-S9
  2. Affected versionversion=22.2 <22.2R3-S5
  3. Affected versionversion=22.4 <22.4R3-S5
  4. Affected versionversion=23.2 <23.2R2-S3
  5. Affected versionversion=23.4 <23.4R2-S5
  6. Affected versionversion=24.2 <24.2R2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OSversion=0 <21.4R3-S9; version=22.2 <22.2R3-S5; version=22.4 <22.4R3-S5; version=23.2 <23.2R2-S3; version=23.4 <23.4R2-S5; version=24.2 <24.2R2

Published CVSS scores

6.5Juniper NetworksCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.9Juniper NetworksCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/AU:Y/R:U/RE:M

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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