How severe is CVE-2023-36584?

CVE-2023-36584 has a CVSS 3.1 base score of 5.4 (MEDIUM). EPSS estimates a 3.3% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2023-36584: Windows Mark of the Web Security Feature Bypass

CISA Known Exploited Vulnerabilities

Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2023-11-16

Remediation due

2023-12-07

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

CISA notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36584 ; https://nvd.nist.gov/vuln/detail/CVE-2023-36584

Description

Windows Mark of the Web Security Feature Bypass Vulnerability

Severity

CVSS 3.1 · CNA5.4 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:F/RL:O/RC:C

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Exploitation Context

as of October 14, 2026

All KEV statistics→

CISA added CVE-2023-36584 to the KEV catalog 37 days after its CVE record was published. The median for entries added in 2023 is 12 days.
It is one of 391 Microsoft entries in the CISA KEV catalog, and one of 27 added in 2023.
Its current EPSS score (3.3%) is higher than that of 13% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Microsoft	Microsoft Windows 10 Version 1809	10.0.17763.0 to <10.0.17763.4974
Microsoft	Microsoft Windows 10 Version 1809	10.0.0 to <10.0.17763.4974
Microsoft	Microsoft Windows Server 2019	10.0.17763.0 to <10.0.17763.4974
Microsoft	Microsoft Windows Server 2019 (Server Core installation)	10.0.17763.0 to <10.0.17763.4974
Microsoft	Microsoft Windows Server 2022	10.0.20348.0 to <10.0.20348.2031
Microsoft	Microsoft Windows 11 version 21H2	10.0.0 to <10.0.22000.2538
Microsoft	Microsoft Windows 10 Version 21H2	10.0.19043.0 to <10.0.19041.3570
Microsoft	Microsoft Windows 11 version 22H2	10.0.22621.0 to <10.0.22621.2428
Microsoft	Microsoft Windows 10 Version 22H2	10.0.19045.0 to <10.0.19045.3570
Microsoft	Microsoft Windows 10 Version 1507	10.0.10240.0 to <10.0.10240.20232
Microsoft	Microsoft Windows 10 Version 1607	10.0.14393.0 to <10.0.14393.6351
Microsoft	Microsoft Windows Server 2016	10.0.14393.0 to <10.0.14393.6351
Microsoft	Microsoft Windows Server 2016 (Server Core installation)	10.0.14393.0 to <10.0.14393.6351
Microsoft	Microsoft Windows Server 2008 Service Pack 2	6.0.6003.0 to <6.0.6003.22317
Microsoft	Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)	6.0.6003.0 to <6.0.6003.22317
Microsoft	Microsoft Windows Server 2008 Service Pack 2	6.0.6003.0 to <6.0.6003.22317
Microsoft	Microsoft Windows Server 2008 R2 Service Pack 1	6.1.7601.0 to <6.1.7601.26769
Microsoft	Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)	6.1.7601.0 to <6.1.7601.26769
Microsoft	Microsoft Windows Server 2012	6.2.9200.0 to <6.2.9200.24523
Microsoft	Microsoft Windows Server 2012 (Server Core installation)	6.2.9200.0 to <6.2.9200.24523
Microsoft	Microsoft Windows Server 2012 R2	6.3.9600.0 to <6.3.9600.21620
Microsoft	Microsoft Windows Server 2012 R2 (Server Core installation)	6.3.9600.0 to <6.3.9600.21620

References

1 Links

Vendor advisories

Windows Mark of the Web Security Feature Bypass Vulnerability

Record Details

Published

2023-10-10

Last updated

2026-01-12

Assigner (CNA)

microsoft

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.