boxscore/security
PRODUCT · referenceProducts · latest edition

Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

Windows 10 Version 1809

Product reference — Windows 10 Version 1809 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
CVEs20491405
KEV entries12112
Rate & severity
KEV/100Med CVSSMed EPSSCHML
5.97.8.00546715224564

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
2025-111
2025-121
2026-0167
2026-0222
2026-030
2026-0498
2026-0551
2026-0684
2026-07311
2026-08160
2026-09612
2026-100

Notable CVEs

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

Notable (ranked)
CVECVSSEPSS %ileSeverityKEVFirst seen
CVE-2021-345278.8100.0HIGHYES2021-11-03
CVE-2024-214128.199.9HIGHYES2024-02-13
CVE-2022-301907.899.9HIGHYES2022-06-14
CVE-2023-368847.599.9HIGHYES2023-07-17
CVE-2021-404448.899.9HIGHYES2021-11-03
CVE-2023-360258.899.8HIGHYES2023-11-14
CVE-2025-330538.899.7HIGHYES2025-06-10
CVE-2021-16757.899.7HIGHYES2021-11-03
CVE-2024-381127.599.7HIGHYES2024-07-09
CVE-2024-434516.599.7MEDIUMYES2024-11-12
CVE-2022-269238.899.7HIGHYES2022-05-10
CVE-2025-330738.899.7HIGHYES2025-06-10
CVE-2021-319555.599.6MEDIUMYES2021-06-08
CVE-2021-17327.899.6HIGHYES2021-11-03
CVE-2023-248804.499.6MEDIUMYES2023-03-14

Recent CVEs

Most recently seen
CVECVSSEPSS %ileSeverityKEVFirst seen
CVE-2026-853607.016.7HIGH—2026-09-08
CVE-2026-858807.889.2HIGHYES2026-09-08
CVE-2026-840017.566.5HIGH—2026-09-08
CVE-2026-839968.824.4HIGH—2026-09-08
CVE-2026-839757.824.4HIGH—2026-09-08
CVE-2026-839988.855.8HIGH—2026-09-08
CVE-2026-839887.824.4HIGH—2026-09-08
CVE-2026-839915.521.0MEDIUM—2026-09-08
CVE-2026-839867.824.4HIGH—2026-09-08
CVE-2026-839797.824.4HIGH—2026-09-08
CVE-2026-839767.824.4HIGH—2026-09-08
CVE-2026-839747.824.4HIGH—2026-09-08
CVE-2026-839697.824.4HIGH—2026-09-08
CVE-2026-839557.824.4HIGH—2026-09-08
CVE-2026-839427.820.5HIGH—2026-09-08

KEV entries

CISA Known Exploited Vulnerabilities (newest addition first)
CVEKEV addedCVSSEPSS %ileSeverity
CVE-2026-858802026-09-087.889.2HIGH
CVE-2026-338242026-08-189.875.3CRITICAL
CVE-2026-688202026-08-117.024.2HIGH
CVE-2026-561552026-07-147.826.0HIGH
CVE-2026-322022026-04-284.391.8MEDIUM
CVE-2023-364242026-04-137.896.1HIGH
CVE-2026-215332026-02-107.890.5HIGH
CVE-2026-215252026-02-106.291.7MEDIUM
CVE-2026-215192026-02-107.883.9HIGH
CVE-2026-215132026-02-108.896.8HIGH
CVE-2026-215102026-02-108.897.8HIGH
CVE-2026-208052026-01-135.594.1MEDIUM
CVE-2025-622212025-12-097.884.2HIGH
CVE-2025-622152025-11-127.093.1HIGH
CVE-2025-330732025-10-208.899.7HIGH
CVE-2025-592302025-10-147.885.2HIGH
CVE-2025-249902025-10-147.893.5HIGH
CVE-2021-432262025-10-067.887.3HIGH
CVE-2025-330532025-06-108.899.7HIGH
CVE-2025-304002025-05-137.879.0HIGH
CVE-2025-327012025-05-137.871.7HIGH
CVE-2025-327062025-05-137.882.8HIGH
CVE-2025-303972025-05-137.598.0HIGH
CVE-2025-327092025-05-137.881.6HIGH
CVE-2025-240542025-04-176.599.1MEDIUM

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.