How severe is CVE-2019-0027?

CVE-2019-0027 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-0027 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-0027?

CVE-2019-0027 affects Juniper Advanced Threat Prevention. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-0027?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-0027 published?

CVE-2019-0027 was published on 2019-01-15 and last updated on 2026-06-17.

CVE-2019-0027

CVE-2019-0027 is a medium-severity vulnerability in Juniper Advanced Threat Prevention with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Juniper Advanced Threat Prevention
Published: 2019-01-15
Last modified: 2026-06-17

Description

A persistent cross-site scripting (XSS) vulnerability in the Snort Rules configuration of Juniper ATP may allow authenticated user to inject arbitrary script and steal sensitive data and credentials from a web administration session, possibly tricking a follow-on administrative user to perform administrative actions on the device. This issue affects Juniper ATP 5.0 versions prior to 5.0.3.

Frequently asked questions

What is CVE-2019-0027?: A persistent cross-site scripting (XSS) vulnerability in the Snort Rules configuration of Juniper ATP may allow authenticated user to inject arbitrary script and steal sensitive data and credentials from a web administration session, possibly tricking a follow-on administrative user to perform administrative actions on the device. This issue affects Juniper ATP 5.0 versions prior to 5.0.3.
How severe is CVE-2019-0027?: CVE-2019-0027 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-0027 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-0027?: CVE-2019-0027 affects Juniper Advanced Threat Prevention. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-0027?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-0027 published?: CVE-2019-0027 was published on 2019-01-15 and last updated on 2026-06-17.

References

https://kb.juniper.net/JSA10918

Affected products (1)

cpe:2.3:o:juniper:advanced_threat_prevention:*:*:*:*:*:*:*:*

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