How severe is CVE-2019-19747?

CVE-2019-19747 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-19747 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-19747?

CVE-2019-19747 affects Neuvector. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-19747?

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

When was CVE-2019-19747 published?

CVE-2019-19747 was published on 2019-12-20 and last updated on 2026-06-17.

CVE-2019-19747

CVE-2019-19747 is a critical-severity vulnerability in Neuvector with a CVSS 3.x base score of 9.8. 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-521.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-521
Affected product: Neuvector
Published: 2019-12-20
Last modified: 2026-06-17

Description

NeuVector 3.1 when configured to allow authentication via Active Directory, does not enforce non-empty passwords which allows an attacker with access to the Neuvector portal to authenticate as any valid LDAP user by providing a valid username and an empty password (provided that the active directory server has not been configured to reject empty passwords).

Frequently asked questions

What is CVE-2019-19747?: NeuVector 3.1 when configured to allow authentication via Active Directory, does not enforce non-empty passwords which allows an attacker with access to the Neuvector portal to authenticate as any valid LDAP user by providing a valid username and an empty password (provided that the active directory server has not been configured to reject empty passwords).
How severe is CVE-2019-19747?: CVE-2019-19747 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-19747 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-19747?: CVE-2019-19747 affects Neuvector. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-19747?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-19747 published?: CVE-2019-19747 was published on 2019-12-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:neuvector:neuvector:*:*:*:*:*:*:*:*

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