How severe is CVE-2021-0279?

CVE-2021-0279 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.

Is CVE-2021-0279 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-0279?

CVE-2021-0279 affects Juniper Contrail Cloud. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-0279?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-0279 published?

CVE-2021-0279 was published on 2021-07-15 and last updated on 2026-06-17.

CVE-2021-0279

CVE-2021-0279 is a high-severity vulnerability in Juniper Contrail Cloud with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: High (CVSS 3.x base score 8.6)
CVSS v2: 5.5
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Juniper Contrail Cloud
Published: 2021-07-15
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-0279?: CVE-2021-0279 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.
Is CVE-2021-0279 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-0279?: CVE-2021-0279 affects Juniper Contrail Cloud. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-0279?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-0279 published?: CVE-2021-0279 was published on 2021-07-15 and last updated on 2026-06-17.

References

https://kb.juniper.net/JSA11183

Affected products (1)

cpe:2.3:a:juniper:contrail_cloud:*:*:*:*:*:*:*:*

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