boxscore/security
PRODUCT · referenceProducts · latest 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.

Windows 11 Version 23H2

Product reference — Windows 11 Version 23H2 by Microsoft · sector: Operating Systems & Platforms. Cumulative disclosure record for this product across the archive.

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Product totals

Disclosures & known-exploited
All-timeYTD
CVEs785554
KEV entries229
Rate & severity
KEV/100Med CVSSMed EPSSCHML
2.87.8.0046145831862

KEV/100 = KEV entries ÷ CVEs × 100. Med CVSS / Med EPSS are medians over this product's disclosures. C/H/M/L = disclosures by CVSS severity band.

Monthly disclosures

Trend (by first-seen month, full archive): ▃▁▁▁▂▁▁▂▄▁▁▁▁▁▄▁▁▁▁▁▁▁▁▄▂▁▆▃▅▂█

Last 12 months (new CVEs by first-seen day)
MonthNew CVEs
2025-090
2025-100
2025-110
2025-120
2026-0177
2026-0226
2026-030
2026-04113
2026-0555
2026-0699
2026-0716
2026-08168

Notable CVEs

Ranked by the published formula: KEV → EPSS → CVSS → CVE ID.

Notable (ranked)
CVECVSSEPSS %ileSeverityKEVFirst seen
CVE-2024-214128.199.9HIGHYES2024-02-13
CVE-2026-338249.899.5CRITICALYES2026-04-14
CVE-2024-300887.099.3HIGHYES2024-10-15
CVE-2024-435727.899.2HIGHYES2024-10-08
CVE-2026-322024.399.2MEDIUMYES2026-04-28
CVE-2024-213387.899.1HIGHYES2024-03-04
CVE-2024-434618.898.9HIGHYES2024-09-16
CVE-2024-435736.598.6MEDIUMYES2024-10-08
CVE-2025-266337.098.1HIGHYES2025-03-11
CVE-2024-213517.698.1HIGHYES2024-02-13
CVE-2026-215108.897.8HIGHYES2026-02-10
CVE-2024-352507.897.8HIGHYES2024-12-16
CVE-2026-215138.896.5HIGHYES2026-02-10
CVE-2024-490398.896.3HIGHYES2024-11-12
CVE-2025-298247.896.2HIGHYES2025-04-08

Recent CVEs

Most recently seen
CVECVSSEPSS %ileSeverityKEVFirst seen
CVE-2026-703467.823.9HIGH—2026-08-11
CVE-2026-703447.823.9HIGH—2026-08-11
CVE-2026-703477.823.8HIGH—2026-08-11
CVE-2026-703457.815.4HIGH—2026-08-11
CVE-2026-703307.824.4HIGH—2026-08-11
CVE-2026-703077.019.1HIGH—2026-08-11
CVE-2026-703047.824.4HIGH—2026-08-11
CVE-2026-688207.026.2HIGHYES2026-08-11
CVE-2026-658147.816.9HIGH—2026-08-11
CVE-2026-667997.819.2HIGH—2026-08-11
CVE-2026-657997.815.8HIGH—2026-08-11
CVE-2026-657986.716.8MEDIUM—2026-08-11
CVE-2026-657956.716.8MEDIUM—2026-08-11
CVE-2026-657976.716.7MEDIUM—2026-08-11
CVE-2026-657946.548.5MEDIUM—2026-08-11

KEV entries

CISA Known Exploited Vulnerabilities (newest addition first)
CVEKEV addedCVSSEPSS %ileSeverity
CVE-2026-338242026-08-189.899.5CRITICAL
CVE-2026-688202026-08-117.026.2HIGH
CVE-2026-322022026-04-284.399.2MEDIUM
CVE-2026-215332026-02-107.889.3HIGH
CVE-2026-215252026-02-106.291.5MEDIUM
CVE-2026-215192026-02-107.882.9HIGH
CVE-2026-215132026-02-108.896.5HIGH
CVE-2026-215102026-02-108.897.8HIGH
CVE-2026-208052026-01-135.591.7MEDIUM
CVE-2025-298242025-04-087.896.2HIGH
CVE-2025-266332025-03-117.098.1HIGH
CVE-2024-352502024-12-167.897.8HIGH
CVE-2024-490392024-11-128.896.3HIGH
CVE-2024-300882024-10-157.099.3HIGH
CVE-2024-435722024-10-087.899.2HIGH
CVE-2024-435732024-10-086.598.6MEDIUM
CVE-2024-434612024-09-168.898.9HIGH
CVE-2024-382172024-09-105.495.2MEDIUM
CVE-2024-380142024-09-107.893.0HIGH
CVE-2024-213382024-03-047.899.1HIGH
CVE-2024-214122024-02-138.199.9HIGH
CVE-2024-213512024-02-137.698.1HIGH

Related

Vendor: Microsoft — all products and the full vendor record.

Methodology

A product is a (vendor, product) pair as named in the affected-product data. Rate statistics are arithmetic over published figures. Counts key to first-seen day. Raw counts are not comparable across products; this is a reference page assembled from the public record, not a ranking by our judgment.

Sources. CVE Program (cvelistV5), NVD (NIST), CISA KEV, FIRST EPSS.