CVE detail

CVE-2021-0210 — CVE-2021-0210

Published 2021-01-15 · Modified 2026-06-17 · Vendor juniper · Product junos · Source nvd
MEDIUM
severity
CVSS-derived band
6.8
CVSS v3
0–10 scale
0.0110
EPSS probability
exploitation probability, 30d
63.0%
EPSS percentile
percentile vs all CVEs
NOT LISTED
CISA KEV
known exploited catalog

Description

An Information Exposure vulnerability in J-Web of Juniper Networks Junos OS allows an unauthenticated attacker to elevate their privileges over the target system through opportunistic use of an authenticated users session. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S17; 17.3 versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S6; 18.3 versions prior to 18.3R2-S4, 18.3R3-S4; 18.4 versions prior to 18.4R2-S5, 18.4R3-S5; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.2 versions prior to 19.2R1-S5, 19.2R3, 19.2R3-S1; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R1-S4, 20.1R2; 20.2 vers

Remediation

vendor remediation guidance

The following software releases have been updated to resolve this specific issue: 12.3R12-S17, 15.1R7-S8, 17.3R3-S10, 17.4R2-S12, 17.4R3-S3, 18.1R3-S11, 18.2R3-S6, 18.3R2-S4, 18.3R3-S4, 18.4R2-S5, 18.4R3-S5, 19.1R1-S6, 19.1R2-S2, 19.1R3-S3, 19.2R1-S5, 19.2R3, 19.2R3-S1, 19.3R2-S4, 19.3R3, 19.4R1-S3, 19.4R2-S2, 19.4R3, 20.1R1-S4, 20.1R2, 20.2R1-S1, 20.2R2, 20.3R1, and all subsequent releases.

workarounds

There are no known workarounds for this issue.

ProductVulnerable rangeFixed versionAdvisory
Juniper Networks Junos OS>=12.3<12.3R12-S1712.3R12-S17advisory ↗
Juniper Networks Junos OS>=17.3<17.3R3-S1017.3R3-S10advisory ↗
Juniper Networks Junos OS>=17.4<17.4R2-S12, 17.4R3-S317.4R2-S12, 17.4R3-S3advisory ↗
Juniper Networks Junos OS>=18.1<18.1R3-S1118.1R3-S11advisory ↗
Juniper Networks Junos OS>=18.2<18.2R3-S618.2R3-S6advisory ↗
Juniper Networks Junos OS>=18.3<18.3R2-S4, 18.3R3-S418.3R2-S4, 18.3R3-S4advisory ↗
Juniper Networks Junos OS>=18.4<18.4R2-S5, 18.4R3-S518.4R2-S5, 18.4R3-S5advisory ↗
Juniper Networks Junos OS>=19.1<19.1R1-S6, 19.1R2-S2, 19.1R3-S319.1R1-S6, 19.1R2-S2, 19.1R3-S3advisory ↗
Juniper Networks Junos OS>=19.2<19.2R1-S5, 19.2R3, 19.2R3-S119.2R1-S5, 19.2R3, 19.2R3-S1advisory ↗
Juniper Networks Junos OS>=19.3<19.3R2-S4, 19.3R319.3R2-S4, 19.3R3advisory ↗
Juniper Networks Junos OS>=19.4<19.4R1-S3, 19.4R2-S2, 19.4R319.4R1-S3, 19.4R2-S2, 19.4R3advisory ↗
Juniper Networks Junos OS>=20.1<20.1R1-S4, 20.1R220.1R1-S4, 20.1R2advisory ↗
Juniper Networks Junos OS>=20.2<20.2R1-S1, 20.2R220.2R1-S1, 20.2R2advisory ↗

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.