How severe is CVE-2020-15931?

CVE-2020-15931 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-15931 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15931?

CVE-2020-15931 affects Netwrix Account Lockout Examiner. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15931?

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-2020-15931 published?

CVE-2020-15931 was published on 2020-10-20 and last updated on 2026-06-17.

CVE-2020-15931

CVE-2020-15931 is a high-severity vulnerability in Netwrix Account Lockout Examiner with a CVSS 3.x base score of 7.5. 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Netwrix Account Lockout Examiner
Published: 2020-10-20
Last modified: 2026-06-17

Description

Netwrix Account Lockout Examiner before 5.1 allows remote attackers to capture the Net-NTLMv1/v2 authentication challenge hash of the Domain Administrator (that is configured within the product in its installation state) by generating a single Kerberos Pre-Authentication Failed (ID 4771) event on a Domain Controller.

Frequently asked questions

What is CVE-2020-15931?: Netwrix Account Lockout Examiner before 5.1 allows remote attackers to capture the Net-NTLMv1/v2 authentication challenge hash of the Domain Administrator (that is configured within the product in its installation state) by generating a single Kerberos Pre-Authentication Failed (ID 4771) event on a Domain Controller.
How severe is CVE-2020-15931?: CVE-2020-15931 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-15931 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15931?: CVE-2020-15931 affects Netwrix Account Lockout Examiner. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15931?: 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-2020-15931 published?: CVE-2020-15931 was published on 2020-10-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:netwrix:account_lockout_examiner:*:*:*:*:*:*:*:*

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