What is CVE-2021-0253?

CVE-2021-0253 is a high-severity vulnerability in Juniper Junos, classified under Command Injection. CVSS score: 7.8/10. Published 2021-04-22.

How severe is CVE-2021-0253?

High severity. CVSS v3 base score is 7.8 out of 10.

RCE in Juniper Junos

CVE-2021-0253

NFX Series devices using Juniper Networks Junos OS are susceptible to a local command execution vulnerability thereby allowing an attacker to elevate their privileges via the Junos Device Management Daemon (JDMD) process. This issue affect…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.005 (41.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Juniper Junos — versions 17.2, 17.3, 17.4
Juniper Nfx150
Juniper Nfx250
Juniper Nfx350
Juniper Networks Junos Os — versions unspecified, 17.2R1, 18.4

Weakness classification (CWE)

CWE-77 — Command Injection

References

sirt@juniper.net (x_refsource_MISC, Vendor Advisory)
sirt@juniper.net (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-0253?: CVE-2021-0253 is a high-severity vulnerability in Juniper Junos, classified under Command Injection. CVSS score: 7.8/10. Published 2021-04-22.
How severe is CVE-2021-0253?: High severity. CVSS v3 base score is 7.8 out of 10.