HOMEVULNERABILITIESCVE-2020-15931
HIGH

CVE-2020-15931

CWE-200Published: October 20, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-15931 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

netwrix1 product(s)
account lockout examiner
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.netwrix.com/netwrix_reports_vulnerability_in_netwrix_account_lockout_examiner_4_1.html
ADVISORYhttps://www.optiv.com/explore-optiv-insights/source-zero/netwrix-account-lockout-examiner-41-disclosure-vulnerability
ADVISORYhttps://www.netwrix.com/netwrix_reports_vulnerability_in_netwrix_account_lockout_examiner_4_1.html
ADVISORYhttps://www.optiv.com/explore-optiv-insights/source-zero/netwrix-account-lockout-examiner-41-disclosure-vulnerability

All References (4)

→
https://www.netwrix.com/netwrix_reports_vulnerability_in_netwrix_account_lockout_examiner_4_1.htmlVendor Advisory
→
https://www.optiv.com/explore-optiv-insights/source-zero/netwrix-account-lockout-examiner-41-disclosure-vulnerabilityThird Party Advisory
→
https://www.netwrix.com/netwrix_reports_vulnerability_in_netwrix_account_lockout_examiner_4_1.htmlVendor Advisory
→
https://www.optiv.com/explore-optiv-insights/source-zero/netwrix-account-lockout-examiner-41-disclosure-vulnerabilityThird Party Advisory

Quick Facts

CVE IDCVE-2020-15931
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-200
CISA KEVNo
Affected1 vendor(s)
PublishedOct 20, 2020

Related CVEs (CWE-200)

CVE-2014-9162
10.0
CVE-2025-29270
10.0
CVE-2020-13702
10.0
CVE-2022-29165
10.0
CVE-2025-61481
10.0
CVE-2017-2320
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-15931 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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