An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device.

A local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device.
This issue is not exploitable from the Junos CLI.
This issue affects Junos OS: 



* All versions before 21.2R3-S9,
* 21.4 versions before 21.4R3-S10, 
* 22.2 versions before 22.2R3-S6, 
* 22.4 versions before 22.4R3-S6, 
* 23.2 versions before 23.2R2-S3, 
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R1-S2, 24.2R2.
Advisories
Source ID Title
EUVD EUVD EUVD-2025-6303 An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device. A local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device. This issue is not exploitable from the Junos CLI. This issue affects Junos OS:  * All versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S10,  * 22.2 versions before 22.2R3-S6,  * 22.4 versions before 22.4R3-S6,  * 23.2 versions before 23.2R2-S3,  * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R1-S2, 24.2R2.
Fixes

Solution

The following software releases have been updated to resolve this specific issue: 21.2R3-S9, 21.4R3-S10, 22.2R3-S6, 22.4R3-S6, 23.2R2-S3, 23.4R2-S4, 24.2R1-S2, 24.2R2, 24.4R1, and all subsequent releases.   Please note that this issue is not fixed for all platforms in the releases specified in the solution section. For the following products the fix is only available in these releases: SRX300 Series   21.2R3-S9, 23.4R2-S5*, 24.4R1 SRX550HM    22.2R3-S7* EX4300 Series     21.4R3-S11* (except EX4300-48MP which has fixes available as indicated in the solution) EX4600               21.4R3-S11* (except EX4650 which has fixes available as indicated in the solution) ACX1000, ACX1100, ACX2100, ACX2200, ACX4000, ACX500              21.2R3-S9 MX104               21.2R3-S9 * Future Release


Workaround

It is strongly recommended to mitigate the risk of exploitation by restricting shell access to trusted users only.

History

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

Type Values Removed Values Added
Metrics epss

{'score': 0.00963}

epss

{'score': 0.01009}


Fri, 14 Mar 2025 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Juniper
Juniper junos
CPEs cpe:2.3:o:juniper:junos:*:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3-s8:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.2:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r3-s3:*:*:*:*:*:*
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cpe:2.3:o:juniper:junos:21.4:r3-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r3-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r3-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r3-s8:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r3-s9:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:21.4:r3:*:*:*:*:*:*
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cpe:2.3:o:juniper:junos:22.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.2:r3-s1:*:*:*:*:*:*
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cpe:2.3:o:juniper:junos:22.2:r3-s3:*:*:*:*:*:*
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cpe:2.3:o:juniper:junos:22.4:r2:*:*:*:*:*:*
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cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:*:*:*:*:*:*:*
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cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:*
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cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:*:*:*:*:*:*:*
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cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:*
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cpe:2.3:o:juniper:junos:24.2:r2:*:*:*:*:*:*
Vendors & Products Juniper
Juniper junos

Thu, 13 Mar 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2025-03-13'}


Thu, 13 Mar 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 12 Mar 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 12 Mar 2025 14:15:00 +0000

Type Values Removed Values Added
Description An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device. A local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device. This issue is not exploitable from the Junos CLI. This issue affects Junos OS:  * All versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S10,  * 22.2 versions before 22.2R3-S6,  * 22.4 versions before 22.4R3-S6,  * 23.2 versions before 23.2R2-S3,  * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R1-S2, 24.2R2.
Title Junos OS: An local attacker with shell access can execute arbitrary code
Weaknesses CWE-653
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 6.7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published:

Updated: 2025-07-30T01:36:16.582Z

Reserved: 2024-12-26T14:47:11.667Z

Link: CVE-2025-21590

cve-icon Vulnrichment

Updated: 2025-03-12T14:30:09.176Z

cve-icon NVD

Status : Analyzed

Published: 2025-03-12T14:15:15.447

Modified: 2025-03-14T20:35:13.207

Link: CVE-2025-21590

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.