How severe is CVE-2023-36584?

CVE-2023-36584 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2023-36584 being actively exploited?

Yes. CVE-2023-36584 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-11-16, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2023-36584?

CVE-2023-36584 primarily affects Microsoft Windows 10 1507. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-36584?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2023-36584 have an EU (EUVD) identifier?

Yes. CVE-2023-36584 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-40529. It is also flagged as exploited in the EUVD (since 2023-11-16).

When was CVE-2023-36584 published?

CVE-2023-36584 was published on 2023-10-10 and last updated on 2026-06-17.

CVE-2023-36584

CVE-2023-36584 is a medium-severity vulnerability in Microsoft Windows 10 1507 with a CVSS 3.x base score of 5.4. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2023-11-16).

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2023-11-16)
EU (EUVD) id: EUVD-2023-40529
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2023-11-16)
Affected product: Microsoft Windows 10 1507
Published: 2023-10-10
Last modified: 2026-06-17

Description

Windows Mark of the Web Security Feature Bypass Vulnerability

Frequently asked questions

What is CVE-2023-36584?: Windows Mark of the Web Security Feature Bypass Vulnerability
How severe is CVE-2023-36584?: CVE-2023-36584 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2023-36584 being actively exploited?: Yes. CVE-2023-36584 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-11-16, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2023-36584?: CVE-2023-36584 primarily affects Microsoft Windows 10 1507. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-36584?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2023-36584 have an EU (EUVD) identifier?: Yes. CVE-2023-36584 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-40529. It is also flagged as exploited in the EUVD (since 2023-11-16).
When was CVE-2023-36584 published?: CVE-2023-36584 was published on 2023-10-10 and last updated on 2026-06-17.

References

Affected products (23)

cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_21h1:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*

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