CVE record · CVE-2023-24880

Windows SmartScreen Security Feature Bypass Vulnerability

CVSS 4.4 MediumCriticalIn CISA KEV · ransomwareEPSS 0.78 · 99th percentile

Critical, because:

In CISA’s KEV catalogue since 14 Mar 2023: it is known to be exploited.

Published by the CVE Program (CNA: microsoft) at 14 Mar 2023, 16:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Microsoft	Windows 10 Version 1809	affected 10.0.17763.0 to before 10.0.17763.4131 custom
Microsoft	Windows 10 Version 1809	affected 10.0.0 to before 10.0.17763.4131 custom
Microsoft	Windows Server 2019	affected 10.0.17763.0 to before 10.0.17763.4131 custom
Microsoft	Windows Server 2019 (Server Core installation)	affected 10.0.17763.0 to before 10.0.17763.4131 custom
Microsoft	Windows Server 2022	affected 10.0.20348.0 to before 10.0.20348.1607 custom
Microsoft	Windows 10 Version 20H2	affected 10.0.0 to before 10.0.19042.2728 custom
Microsoft	Windows 11 version 21H2	affected 10.0.0 to before 10.0.22000.1696 custom
Microsoft	Windows 10 Version 21H2	affected 10.0.19043.0 to before 10.0.19044.2728 custom
Microsoft	Windows 11 version 22H2	affected 10.0.22621.0 to before 10.0.22621.1413 custom
Microsoft	Windows 10 Version 22H2	affected 10.0.19045.0 to before 10.0.19045.2728 custom
Microsoft	Windows 10 Version 1607	affected 10.0.14393.0 to before 10.0.14393.5786 custom
Microsoft	Windows Server 2016	affected 10.0.14393.0 to before 10.0.14393.5786 custom
Microsoft	Windows Server 2016 (Server Core installation)	affected 10.0.14393.0 to before 10.0.14393.5786 custom

Identifiers: CVE-2023-24880
CNA: microsoft
Weakness (CWE): CWE-863
Tags: Microsoft Windows 10 Version 1809
Microsoft Windows Server 2019
Microsoft Windows Server 2019 (Server Core installation)
Microsoft Windows Server 2022
Microsoft Windows 10 Version 20H2
Microsoft Windows 11 version 21H2
Microsoft Windows 10 Version 21H2
Microsoft Windows 11 version 22H2
Broken access control
Published: 14 Mar 2023
Updated: 21 Oct 2025

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
4.4	Medium	3.1	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:F/RL:O/RC:C	CNA (microsoft)

CISA KEV Listed since 14 Mar 2023: known to be exploited. CISA reports use in ransomware campaigns.
EPSS 0.78, the 99th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 14 Mar 2023. New records show when each source confirmed them.

Sources

References from the CNA

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24880 vendor-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.