CVE-2025-21590

Junos OS: An local attacker with shell access can execute arbitrary code

Basic Information

CVE State
PUBLISHED
Reserved Date
December 26, 2024
Published Date
March 12, 2025
Last Updated
April 14, 2025
Vendor
Juniper Networks
Product
Junos OS
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.

CVSS Scores

CVSS v4.0

6.7 - MEDIUM

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

CVSS v3.1

4.4 - MEDIUM

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

SSVC Information

Exploitation
active
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (added 2025-03-13 00:00:00 UTC) Source

Known Exploited Vulnerability Information

Source Added Date
CISA 2025-03-13 00:00:00 UTC