CVE-2025-30650

Root escalation via unauthenticated FPC boot script

Published Apr 8, 2026 · Updated Apr 8, 2026

Missing authentication in Juniper Networks Junos OS command processing allows local users with high privileges to gain FPC root access. An affected command path launches an attacker-controlled script as root during FPC boot without requiring the root password. Exploitation requires shell and maintenance privileges on a system with a listed Linux-based line card; FPC root access provides persistent root control of the router.

CVSS severity8.4
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Juniper Networks Junos OS command processing allows local users with high privileges to gain FPC root access. An affected command path launches an attacker-controlled script as root during FPC boot without requiring the root password. Exploitation requires shell and maintenance privileges on a system with a listed Linux-based line card; FPC root access provides persistent root control of the router.

The record

CVE
CVE-2025-30650
Published
Apr 8, 2026
Updated
Apr 8, 2026
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-306, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record 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=23.2 <23.2R2-S6
  2. Affected versionversion=23.4 <23.4R2-S6
  3. Affected versionversion=24.2 <24.2R2-S3
  4. Affected versionversion=24.4 <24.4R2
  5. Affected versionversion=25.2 <25.2R2
  6. Affected versionversion=all versions <22.4R3-S8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Juniper Networks · Junos OSversion=23.2 <23.2R2-S6; version=23.4 <23.4R2-S6; version=24.2 <24.2R2-S3; version=24.4 <24.4R2; version=25.2 <25.2R2; version=all versions <22.4R3-S8

Published CVSS scores

6.7Juniper NetworksCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.4Juniper NetworksCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1068Exploitation for Privilege Escalation

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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