What is CVE-2021-0279?

CVE-2021-0279 is a high-severity vulnerability in Juniper Contrail Cloud, classified under Use of Hard-coded Credentials. CVSS score: 8.6/10. Published 2021-07-15.

How severe is CVE-2021-0279?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Juniper Contrail Cloud

CVE-2021-0279

Juniper Networks Contrail Cloud (CC) releases prior to 13.6.0 have RabbitMQ service enabled by default with hardcoded credentials. The messaging services of RabbitMQ are used when coordinating operations and status information among Contrail services. An attacker with access to an administrative service for RabbitMQ (e.g. GUI), can use these hardcoded credentials to cause a Denial of Service (DoS) or have access to unspecified sensitive system information. This issue affects the Juniper Networks Contrail Cloud releases on versions prior to 13.6.0.

Published 2021-07-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Juniper Contrail Cloud
Juniper Networks Contrail Cloud — versions unspecified

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

kb.juniper.net/JSA11183 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-0279?: CVE-2021-0279 is a high-severity vulnerability in Juniper Contrail Cloud, classified under Use of Hard-coded Credentials. CVSS score: 8.6/10. Published 2021-07-15.
How severe is CVE-2021-0279?: High severity. CVSS v3 base score is 8.6 out of 10.