CVE-2023-36584

Windows Mark of the Web Security Feature Bypass Vulnerability

Medium 5.4
Exploited: added to CISA KEV 16 Nov 2023

Description

Windows Mark of the Web Security Feature Bypass Vulnerability

Key facts

Published: 10 Oct 2023
Last changed: 12 Jan 2026
Assigned by: microsoft
KEV added: 16 Nov 2023
KEV fix due: 7 Dec 2023
EPSS: 3.251% likely to be exploited in the next 30 days, higher than 88.541% of CVEs (scores for 15 Nov 2026)
SSVC (CISA): Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

5.4CVSS 3.1, Mediumfrom the CNA (microsoft)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

What to do

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

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

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

Timeline

10 Oct 2023 Published
16 Nov 2023 Added to the CISA KEV catalogue

References

Windows Mark of the Web Security Feature Bypass Vulnerabilityvendor-advisory