What is CVE-2021-0222?

CVE-2021-0222 is a high-severity vulnerability in Juniper Ex2300, classified under CWE-16. CVSS score: 7.4/10. Published 2021-01-15.

How severe is CVE-2021-0222?

High severity. CVSS v3 base score is 7.4 out of 10.

Is CVE-2021-0222 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Juniper Ex2300

CVE-2021-0222

A vulnerability in Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) to the device by sending certain crafted protocol packets from an adjacent device with invalid payloads to the device. These crafted packets…

EPSS: 0.006 (45.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Juniper Ex2300
Juniper Ex3400
Juniper Ex4300
Juniper Ex4600
Juniper Ex4650
Juniper Junos — versions 14.1x53, 15.1, 16.1
Juniper Qfx3500
Juniper Qfx5100
Juniper Qfx5110
Juniper Qfx5120

Weakness classification (CWE)

CWE-16

Public proof-of-concept exploits

elon996/gluttony

References

sirt@juniper.net (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0222?: CVE-2021-0222 is a high-severity vulnerability in Juniper Ex2300, classified under CWE-16. CVSS score: 7.4/10. Published 2021-01-15.
How severe is CVE-2021-0222?: High severity. CVSS v3 base score is 7.4 out of 10.
Is CVE-2021-0222 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.