CVE-2020-1472

CRITICALNVD 10.010.0—
EchelonGraph scoreHIGH confidence

Score elevated to 10.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 10.0 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
10.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 100%CVSS: 10.0Exploit: cisa kev · ssvc active · kev ransomware · Metasploit · epss top5pct · epss high · public exploitExposed: 0

A fix is available — apply it.

An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC). An attacker who successfully exploited the vulnerability could run a specially crafted application on a device on the network. To exploit the vulnerability, an unauthenticated attacker would be required to use MS-NRPC to connect to a domain controller to obtain domain administrator access. Microsoft is addressing the vulnerability in a phased two-part rollout. These updates address the vulnerability by modifying how Netlogon handles the usage of Netlogon secure channels. For guidelines on how to manage the changes required for this vulnerability and more information on the phased rollout, see How to manage the changes in Netlogon secure channel connections associated with CVE-2020-1472 (updated September 28, 2020). When the second phase of Windows updates become available in Q1 2021, customers will be notified via a revision to this security vulnerability. If you wish to be notified when these updates are released, we recommend that you register for the security notifications mailer to be alerted of content changes to this advisory. See Microsoft Technical Security Notifications.

CVSS v3
10.0
EG Score
10.0(high)
EG Risk
100(Act)
EG Risk 100/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
100%
EPSS %ILE
100%
KEV
⚠ Exploited

Published

August 17, 2020

Last Modified

June 17, 2026

Advisory Details (8)

Auto-updated Aug 19, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1472
generic

[SECURITY] Fedora 33 Update: samba-4.13.0-11.fc33 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TAPQQZZAT4TG3XVRTAFV2Y3S7OAHFBUP/
generic

[SECURITY] Fedora 31 Update: samba-4.11.13-0.fc31 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ST6X3A2XXYMGD4INR26DQ4FP4QSM753B/
generic

[SECURITY] Fedora 32 Update: samba-4.12.7-0.fc32 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H4OTFBL6YDVFH2TBJFJIE4FMHPJEEJK3/
generic Patch Available

[SECURITY] [DLA 2463-1] samba security update

https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html
generic

oss-security - Samba and CVE-2020-1472 ("Zerologon")

http://www.openwall.com/lists/oss-security/2020/09/17/2
generic

Locked Out | Packet Storm

http://packetstormsecurity.com/files/160127/Zerologon-Netlogon-Privilege-Escalation.html
generic

Locked Out | Packet Storm

http://packetstormsecurity.com/files/159190/Zerologon-Proof-Of-Concept.html

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwinbind (2:4.3.11+dfsg-0ubuntu0.16.04.30) @ xenial2026-08-26ubuntu
ubuntulibpam-smbpass (2:4.3.11+dfsg-0ubuntu0.14.04.20+esm9) @ trusty2026-08-26ubuntu
ubuntuwinbind (2:4.3.11+dfsg-0ubuntu0.16.04.31) @ xenial2026-08-26ubuntu
redhatsamba-0:4.11.6-112.el7rhgs2021-10-05redhat
redhatsamba-0:4.13.3-3.el82021-05-18redhat
redhatsamba-0:4.13.7-101.el8rhgs2021-05-05redhat
redhatsamba-0:4.10.16-9.el7_92020-12-15redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(20 across 20 ecosystems)
Alpine:v3.10(1)
PackageVulnerable rangeFixed inDependents
samba—4.10.18-r0—
Alpine:v3.11(1)
PackageVulnerable rangeFixed inDependents
samba—4.11.14-r0—
Alpine:v3.12(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.13(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.14(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.15(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.16(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.17(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.18(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.19(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
samba—4.12.7-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
samba—2:4.13.2+dfsg-2—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
samba—2:4.13.2+dfsg-2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
samba—2:4.13.2+dfsg-2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
samba—2:4.13.2+dfsg-2—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
samba2:4.5.12+dfsg-1 ... 2:4.5.8+dfsg-2+deb9u2 (12 versions)2:4.5.16+dfsg-1+deb9u3—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(8)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 94× in last 7d / 401× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 1,116 total refreshes for this CVE.

  1. 2026-08-26 10:10 UTCVendor advisory
  2. 2026-08-26 10:10 UTCGHSA enrichment
  3. 2026-08-26 06:21 UTCVendor advisory
  4. 2026-08-26 06:20 UTCGHSA enrichment
  5. 2026-08-26 02:26 UTCVendor advisory
  6. 2026-08-26 02:26 UTCGHSA enrichment
  7. 2026-08-25 22:37 UTCVendor advisory
  8. 2026-08-25 22:37 UTCGHSA enrichment
  9. 2026-08-25 18:48 UTCVendor advisory
  10. 2026-08-25 18:48 UTCGHSA enrichment
  11. 2026-08-25 14:59 UTCVendor advisory
  12. 2026-08-25 14:59 UTCGHSA enrichment
  13. 2026-08-25 11:11 UTCVendor advisory
  14. 2026-08-25 11:11 UTCGHSA enrichment
  15. 2026-08-25 07:22 UTCVendor advisory
  16. 2026-08-25 07:22 UTCGHSA enrichment
  17. 2026-08-25 03:33 UTCVendor advisory
  18. 2026-08-25 03:33 UTCGHSA enrichment
  19. 2026-08-24 23:45 UTCVendor advisory
  20. 2026-08-24 23:45 UTCGHSA enrichment
  21. 2026-08-24 19:56 UTCVendor advisory
  22. 2026-08-24 19:56 UTCGHSA enrichment
  23. 2026-08-24 18:52 UTCCISA KEV update
  24. 2026-08-24 16:08 UTCEG score recompute
  25. 2026-08-24 16:08 UTCVendor advisory
Show 75 more
  1. 2026-08-24 16:08 UTCGHSA enrichment
  2. 2026-08-24 12:18 UTCEG score recompute
  3. 2026-08-24 12:18 UTCVendor advisory
  4. 2026-08-24 12:18 UTCGHSA enrichment
  5. 2026-08-24 08:29 UTCVendor advisory
  6. 2026-08-24 08:29 UTCGHSA enrichment
  7. 2026-08-24 04:40 UTCVendor advisory
  8. 2026-08-24 04:40 UTCGHSA enrichment
  9. 2026-08-24 00:51 UTCVendor advisory
  10. 2026-08-24 00:51 UTCGHSA enrichment
  11. 2026-08-23 21:02 UTCVendor advisory
  12. 2026-08-23 21:02 UTCGHSA enrichment
  13. 2026-08-23 17:13 UTCVendor advisory
  14. 2026-08-23 17:13 UTCGHSA enrichment
  15. 2026-08-23 13:24 UTCVendor advisory
  16. 2026-08-23 13:24 UTCGHSA enrichment
  17. 2026-08-23 09:36 UTCVendor advisory
  18. 2026-08-23 09:36 UTCGHSA enrichment
  19. 2026-08-23 05:47 UTCVendor advisory
  20. 2026-08-23 05:47 UTCGHSA enrichment
  21. 2026-08-23 01:58 UTCVendor advisory
  22. 2026-08-23 01:58 UTCGHSA enrichment
  23. 2026-08-22 22:10 UTCVendor advisory
  24. 2026-08-22 22:10 UTCGHSA enrichment
  25. 2026-08-22 18:21 UTCVendor advisory
  26. 2026-08-22 18:21 UTCGHSA enrichment
  27. 2026-08-22 14:32 UTCVendor advisory
  28. 2026-08-22 14:32 UTCGHSA enrichment
  29. 2026-08-22 10:43 UTCVendor advisory
  30. 2026-08-22 10:43 UTCGHSA enrichment
  31. 2026-08-22 06:54 UTCVendor advisory
  32. 2026-08-22 06:54 UTCGHSA enrichment
  33. 2026-08-22 03:05 UTCVendor advisory
  34. 2026-08-22 03:05 UTCGHSA enrichment
  35. 2026-08-21 23:16 UTCVendor advisory
  36. 2026-08-21 23:16 UTCGHSA enrichment
  37. 2026-08-21 19:28 UTCVendor advisory
  38. 2026-08-21 19:28 UTCGHSA enrichment
  39. 2026-08-21 16:49 UTCCISA KEV update
  40. 2026-08-21 15:39 UTCVendor advisory
  41. 2026-08-21 15:39 UTCGHSA enrichment
  42. 2026-08-21 11:50 UTCVendor advisory
  43. 2026-08-21 11:50 UTCGHSA enrichment
  44. 2026-08-21 08:01 UTCVendor advisory
  45. 2026-08-21 08:01 UTCGHSA enrichment
  46. 2026-08-21 04:12 UTCVendor advisory
  47. 2026-08-21 04:12 UTCGHSA enrichment
  48. 2026-08-21 00:23 UTCVendor advisory
  49. 2026-08-21 00:23 UTCGHSA enrichment
  50. 2026-08-20 20:35 UTCVendor advisory
  51. 2026-08-20 20:35 UTCGHSA enrichment
  52. 2026-08-20 17:06 UTCCISA KEV update
  53. 2026-08-20 16:46 UTCVendor advisory
  54. 2026-08-20 16:46 UTCGHSA enrichment
  55. 2026-08-20 12:58 UTCVendor advisory
  56. 2026-08-20 12:57 UTCGHSA enrichment
  57. 2026-08-20 09:08 UTCVendor advisory
  58. 2026-08-20 09:08 UTCGHSA enrichment
  59. 2026-08-20 05:19 UTCVendor advisory
  60. 2026-08-20 05:19 UTCGHSA enrichment
  61. 2026-08-20 01:30 UTCVendor advisory
  62. 2026-08-20 01:30 UTCGHSA enrichment
  63. 2026-08-19 21:41 UTCVendor advisory
  64. 2026-08-19 21:41 UTCGHSA enrichment
  65. 2026-08-19 17:52 UTCVendor advisory
  66. 2026-08-19 17:52 UTCGHSA enrichment
  67. 2026-08-19 17:33 UTCCISA KEV update
  68. 2026-08-19 14:03 UTCVendor advisory
  69. 2026-08-19 14:03 UTCGHSA enrichment
  70. 2026-08-19 10:15 UTCVendor advisory
  71. 2026-08-19 10:15 UTCGHSA enrichment
  72. 2026-08-19 06:26 UTCVendor advisory
  73. 2026-08-19 06:26 UTCGHSA enrichment
  74. 2026-08-19 02:37 UTCVendor advisory
  75. 2026-08-19 02:37 UTCGHSA enrichment

Publicly available exploits

(10 references)

Working exploit code is in the public domain (1 Metasploit module) (8 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCRvn0xsy/ZeroLogon
    First seen Aug 31, 2022

    CVE-2020-1472 C++

    Open source ↗
  • Exploit-DBEDB-49071
    First seen Nov 18, 2020

    ZeroLogon - Netlogon Elevation of Privilege

    Open source ↗
  • GitHub PoCzeronetworks/zerologon
    First seen Sep 17, 2020

    Test script for CVE-2020-1472 for both RPC/TCP and RPC/SMB

    Open source ↗
  • GitHub PoCmstxq17/cve-2020-1472
    First seen Sep 16, 2020

    cve-2020-1472 复现利用及其exp

    Open source ↗
  • GitHub PoCk8gege/CVE-2020-1472-EXP
    First seen Sep 15, 2020

    Ladon Moudle CVE-2020-1472 Exploit 域控提权神器

    Open source ↗
  • Metasploitauxiliary/admin/dcerpc/cve_2020_1472_zerologon✓ verified
    First seen Sep 15, 2020

    Netlogon protocol vulnerability allowing domain takeover with no credentials.

    Open source ↗
  • GitHub PoCcube0x0/CVE-2020-1472
    First seen Sep 14, 2020
    Open source ↗
  • GitHub PoCSecuraBV/CVE-2020-1472✓ verified
    First seen Sep 14, 2020

    Original Secura PoC — minimal, reads the white-paper detection script.

    Open source ↗
  • GitHub PoCdirkjanm/CVE-2020-1472
    First seen Sep 14, 2020

    PoC for Zerologon - all research credits go to Tom Tervoort of Secura

    Open source ↗
  • GitHub PoCrisksense/zerologon
    First seen Sep 14, 2020

    Exploit for zerologon cve-2020-1472

    Open source ↗

Frequently asked(6)

What is CVE-2020-1472?
CVE-2020-1472 is a critical vulnerability published on August 17, 2020. An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC). An attacker who successfully exploited the vulnerability could run a specially crafted application on a…
When was CVE-2020-1472 disclosed?
CVE-2020-1472 was first published in the National Vulnerability Database on August 17, 2020, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-1472 actively exploited?
Yes. CISA added CVE-2020-1472 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Microsoft Netlogon. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2020-1472?
CVE-2020-1472 has a CVSS v3 base score of 10.0 (NVD).
Which products are affected by CVE-2020-1472?
CVE-2020-1472 affects Microsoft Netlogon. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2020-1472?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-1472, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-1472

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