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Vulnerability Intelligence

CVE-2023-36584

MediumExploitedPublic exploit

Windows Mark of the Web Security Feature Bypass Vulnerability

Published Oct 11, 2023 · Updated Jan 12, 2026

Key Facts

Patch immediately
  • CVE-2023-36584 is a medium-severity vulnerability (CVSS 5.4 v3.1) affecting Windows 10 1507 (Microsoft), Windows 10 1809 (Microsoft), Windows 10 21h1 (Microsoft) and 22 more products.
  • It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Nov 13, 2023. Public exploit code is available.
  • EPSS estimates a 3.3% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Windows 10 1507 10.0.10240.20232, Windows 10 1809 10.0.17763.4974, Windows 10 21h1 10.0.19041.3570.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

5.4

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

EPSS (30-day exploit likelihood)

3.3%

Higher than 88.1% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2023-36584 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Windows Mark of the Web Security Feature Bypass Vulnerability

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CISA KEVNov 16, 2023Dec 7, 2023Not reported
Industry KEV feedNov 13, 2023Dec 7, 2023Not reported
CIRCL KEVNov 16, 2023Dec 7, 2023Not reported
ENISA EUVDNov 16, 2023n/aNot reported

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected Products

44 affected entries in total
ProductAffected versionsFixed in
Windows 10 1507MicrosoftSee advisory10.0.10240.20232
Windows 10 1809MicrosoftSee advisory10.0.17763.4974
Windows 10 21h1MicrosoftSee advisory10.0.19041.3570
Windows 10 22h2MicrosoftSee advisory10.0.19041.3570
Windows 11 21h2MicrosoftSee advisory10.0.22000.2538
20 more affected products in the full CVE brief

Patched Releases

Windows 10 1507

10.0.10240.20232

Windows 10 1809

10.0.17763.4974

Windows 10 21h1

10.0.19041.3570

Windows 10 22h2

10.0.19041.3570

Windows 11 21h2

10.0.22000.2538

Windows 11 22h2

10.0.22621.2428

Windows Server 2016

10.0.14393.6351

Windows Server 2019

10.0.17763.4974

Windows Server 2022

10.0.20348.2031

Windows 10 Version 1507

10.0.10240.20232

Windows 10 Version 1607

10.0.14393.6351

Windows 10 Version 1809

10.0.17763.4974

Windows 10 Version 21H2

10.0.19041.3570

Windows 10 Version 22H2

10.0.19045.3570

Windows 11 version 21H2

10.0.22000.2538

Windows 11 version 22H2

10.0.22621.2428

Windows Server 2008 Service Pack 2

6.0.6003.22317

Windows Server 2008 R2 Service Pack 1

6.1.7601.26769

Windows Server 2008 R2 Service Pack 1 (Server Core installation)

6.1.7601.26769

Windows Server 2008 Service Pack 2 (Server Core installation)

6.0.6003.22317

Windows Server 2012

6.2.9200.24523

Windows Server 2012 (Server Core installation)

6.2.9200.24523

Windows Server 2012 R2

6.3.9600.21620

Windows Server 2012 R2 (Server Core installation)

6.3.9600.21620

Windows Server 2016 (Server Core installation)

10.0.14393.6351

Timeline

  1. Publicly disclosed

    Oct 11, 2023

  2. Added to Industry KEV feed

    Nov 13, 2023

  3. Added to CISA KEV

    Nov 16, 2023

  4. Added to CIRCL KEV

    Nov 16, 2023

  5. Added to ENISA EUVD

    Nov 16, 2023

  6. Last updated

    Jan 12, 2026

References

5 more references in the full CVE brief

FAQ

Common Questions.

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