CVE detail

CVE-2021-0235 — CVE-2021-0235

Published 2021-04-22 · Modified 2026-06-17 · Vendor juniper · Product junos · Source nvd
HIGH
severity
CVSS-derived band
7.3
CVSS v3
0–10 scale
0.0024
EPSS probability
exploitation probability, 30d
15.0%
EPSS percentile
percentile vs all CVEs
NOT LISTED
CISA KEV
known exploited catalog

Description

On SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3, vSRX Series devices using tenant services on Juniper Networks Junos OS, due to incorrect permission scheme 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; 18.4 version 18.4R1 and later versions on SRX1500, SRX4100, SRX4200, SRX4600, SRX5000 Series with SPC2/SPC3; 19.1 versions 19.1R1 and lat

Remediation

vendor remediation guidance

The following software releases have been updated to resolve this specific issue: 19.2R1-S6, 19.2R3-S2, 19.3R3-S2, 19.4R2-S4, 19.4R3-S2, 20.1R2, 20.1R3, 20.2R2-S1, 20.2R3, 20.3R1-S2, 20.3R2, 20.4R1, and all subsequent releases.

workarounds

There are no viable workarounds for this issue.

ProductVulnerable rangeFixed versionAdvisory
Juniper Networks Junos OS>=18.3R1<18.3*18.3*advisory ↗
Juniper Networks Junos OS>=18.4R1<18.4*18.4*advisory ↗
Juniper Networks Junos OS>=19.1R1<19.1*19.1*advisory ↗
Juniper Networks Junos OS>=19.2<19.2R1-S6, 19.2R3-S219.2R1-S6, 19.2R3-S2advisory ↗
Juniper Networks Junos OS>=19.3<19.3R3-S219.3R3-S2advisory ↗
Juniper Networks Junos OS>=19.4<19.4R2-S4, 19.4R3-S219.4R2-S4, 19.4R3-S2advisory ↗
Juniper Networks Junos OS>=20.1<20.1R2, 20.1R320.1R2, 20.1R3advisory ↗
Juniper Networks Junos OS>=20.2<20.2R2-S1, 20.2R320.2R2-S1, 20.2R3advisory ↗
Juniper Networks Junos OS>=20.3<20.3R1-S2, 20.3R220.3R1-S2, 20.3R2advisory ↗
Juniper Networks Junos OS>=20.4<20.4R1, 20.4R220.4R1, 20.4R2advisory ↗

References

cvedb.io · NVD · CISA KEV · FIRST EPSS · vendor advisories (CVE Program List v5). Informational only, no warranty — verify every remediation against the vendor advisory before acting on it. This product uses data from the NVD API but is not endorsed or certified by the NVD, CISA, FIRST.org or any vendor named. CVE® is a registered trademark of The MITRE Corporation.