CVE-2021-0246

HIGH

Juniper Networks Junos OS - Privilege Escalation

Title source: llm
STIX 2.1

Description

On SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3, devices using tenant services on Juniper Networks Junos OS, due to incorrect default permissions assigned to tenant system administrators a tenant system administrator may inadvertently send their network traffic to one or more tenants while concurrently modifying the overall device system traffic management, affecting all tenants and the service provider. Further, a tenant may inadvertently receive traffic from another tenant. This issue affects: Juniper Networks Junos OS 18.3 version 18.3R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2; 18.3 versions prior to 18.3R3 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2; 18.4 versions prior to 18.4R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.1 versions prior to 19.1R2 on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3. This issue does not affect: Juniper Networks Junos OS versions prior to 18.3R1.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_misc
https://kb.juniper.net/JSA11139

Scores

CVSS v3 7.3
EPSS 0.0004
EPSS Percentile 11.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:L

Details

CWE
CWE-276
Status published
Products (3)
juniper/junos 18.3 (13 CPE variants)
juniper/junos 18.4 (9 CPE variants)
juniper/junos 19.1 (7 CPE variants)
Published Apr 22, 2021
Tracked Since Feb 18, 2026