CVE-2020-15931

Name: CVE-2020-15931
Creator: NVD / NIST
Published: 2020-10-20T20:15:14.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.73%

Last modified Jun 17, 2026

CVE-2020-15931 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 3.73% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

3.73%

88.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Netwrix	Account Lockout Examiner	< 5.1

References

Timeline

Published: Oct 20, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15931?

How severe is CVE-2020-15931?

CVE-2020-15931 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.73% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15931?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15931?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST