critical Known exploitedREV. 01

CVE-2020-1472Zerologon — Netlogon Secure Channel Accepts an Empty Key

A flawed cryptographic step lets an attacker on the network set the domain controller's own account password, taking the entire directory in seconds.

YOUR NEXT MOVE

Apply Microsoft's update and then enforce secure channel mode; the patch alone leaves the permissive path open.

Read the risk

THE VITAL STATS
CVSS score
10.0/ 10
CVSS v3.1
EPSS probability
100%
Likelihood of exploitation
Attack complexity
Low
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2020-08-17
Added to KEV
2021-11-03
Exploit published
Yes
Confidence
medium
Kill chain
privilege escalation
MITRE ATT&CK
T1068
Severity
critical

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

Attacker needsNetwork access to a domain controller

Behind the card

5 REFERENCES
Field-level provenanceTRACE THE SOURCES +

Which source supports each field, when it was retrieved, and who extracted it.

FieldsSourceRetrievedExtractorConfidence
cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_atnvd.nist.gov2026-08-07scrty-crds-pipeline/0.1high
exploitation.known_exploited, exploitation.kev_addedcisa.gov2026-08-07scrty-crds-pipeline/0.1high
epssapi.first.org2026-08-07scrty-crds-pipeline/0.1high
title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisitesnvd.nist.gov2026-08-07claude-codehigh

Printing history

THE RECORD
  1. r1Initial base card

First printing. This card has not been reprinted since publication.

crds:cve-2020-1472 · CRDS 0.1 · Issued 2026-08-07