CVE-2024-21343 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2024-21343HIGH

Microsoft Windows 10 Version 1507 — Windows Network Address Translation (NAT) Denial of Service Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0184   77.3     —

AFFECTED
  Product                  Versions        Fixed
  Windows 10 Version 1507  10.0.10240.0 –  —
  Windows 10 Version 1607  10.0.14393.0 –  —
  Windows 10 Version 1809  10.0.17763.0 –  —
  Windows 10 Version 1809  10.0.0 –        —
  Windows 10 Version 21H2  10.0.19043.0 –  —
  Windows 10 Version 22H2  10.0.19045.0 –  —
  Windows 11 version 21H2  10.0.0 –        —
  Windows 11 version 22H2  10.0.22621.0 –  —
  Windows 11 version 22H3  10.0.22631.0 –  —
  Windows 11 Version 23H2  10.0.22631.0 –  —
  + 8 more

TIMELINE
  Dec 8   Reserved by microsoft
  Feb 13  Published (CNA: microsoft)
  Aug 10  RESCORED — CVE-2024-21343 (Microsoft Windows 10 Version 1507). CVSS 5.9 → 7.5 (NVD).

CWE-125 · CNA: microsoft · CVSS v3.1 · 1 reference · NVD status: Modified

Description

Windows Network Address Translation (NAT) Denial of Service Vulnerability

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
December 8, 2023	Reserved	Reserved by microsoft
February 13, 2024	Published	Published (CNA: microsoft)
August 10, 2026	RESCORED	RESCORED — CVE-2024-21343 (Microsoft Windows 10 Version 1507). CVSS 5.9 → 7.5 (NVD).

Affected

Affected products and packages — 18 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Windows 10 Version 1507	—	10.0.10240.0	—
Microsoft	Windows 10 Version 1607	—	10.0.14393.0	—
Microsoft	Windows 10 Version 1809	—	10.0.17763.0	—
Microsoft	Windows 10 Version 1809	—	10.0.0	—
Microsoft	Windows 10 Version 21H2	—	10.0.19043.0	—
Microsoft	Windows 10 Version 22H2	—	10.0.19045.0	—
Microsoft	Windows 11 version 21H2	—	10.0.0	—
Microsoft	Windows 11 version 22H2	—	10.0.22621.0	—
Microsoft	Windows 11 version 22H3	—	10.0.22631.0	—
Microsoft	Windows 11 Version 23H2	—	10.0.22631.0	—
Microsoft	Windows Server 2012 R2	—	6.3.9600.0	—
Microsoft	Windows Server 2012 R2 (Server Core installation)	—	6.3.9600.0	—
Microsoft	Windows Server 2016	—	10.0.14393.0	—
Microsoft	Windows Server 2016 (Server Core installation)	—	10.0.14393.0	—
Microsoft	Windows Server 2019	—	10.0.17763.0	—
Microsoft	Windows Server 2019 (Server Core installation)	—	10.0.17763.0	—
Microsoft	Windows Server 2022	—	10.0.20348.0	—
Microsoft	Windows Server 2022, 23H2 Edition (Server Core installation)	—	10.0.25398.0	—

Weaknesses

CWE-125

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21343 [Patch, Vendor Advisory]

Authoritative record: CVE-2024-21343 at cve.org

Vendors: microsoft

Weaknesses: CWE-125

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-21343 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.