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 Server 2008 R2 Service Pack 1

Product reference — Windows Server 2008 R2 Service Pack 1 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
CVEs39126
KEV entries250
Rate & severity
KEV/100Med CVSSMed EPSSCHML
6.47.8.016216294800

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
2026-0126
2026-020
2026-030
2026-040
2026-050
2026-060
2026-070
2026-080

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-2022-301907.899.9HIGHYES2022-06-14
CVE-2023-368847.599.9HIGHYES2023-07-17
CVE-2021-404448.899.9HIGHYES2021-11-03
CVE-2021-16757.899.7HIGHYES2021-11-03
CVE-2021-422877.599.4HIGHYES2022-04-11
CVE-2021-422787.599.3HIGHYES2022-04-11
CVE-2024-435727.899.2HIGHYES2024-10-08
CVE-2021-369427.599.2HIGHYES2021-11-03
CVE-2024-434618.898.9HIGHYES2024-09-16
CVE-2020-10547.098.9HIGHYES2021-11-03
CVE-2021-344486.898.5MEDIUMYES2021-11-03
CVE-2025-266337.098.1HIGHYES2025-03-11
CVE-2024-352507.897.8HIGHYES2024-12-16
CVE-2022-411288.897.7HIGHYES2022-11-08

Recent CVEs

Most recently seen
CVECVSSEPSS %ileSeverityKEVFirst seen
CVE-2026-209407.838.9HIGH—2026-01-13
CVE-2026-209364.338.2MEDIUM—2026-01-13
CVE-2026-209318.053.3HIGH—2026-01-13
CVE-2026-209297.564.6HIGH—2026-01-13
CVE-2026-209275.357.7MEDIUM—2026-01-13
CVE-2026-209256.596.9MEDIUM—2026-01-13
CVE-2026-209227.862.6HIGH—2026-01-13
CVE-2026-209217.565.7HIGH—2026-01-13
CVE-2026-208757.573.7HIGH—2026-01-13
CVE-2026-208726.597.2MEDIUM—2026-01-13
CVE-2026-208697.022.5HIGH—2026-01-13
CVE-2026-208688.870.1HIGH—2026-01-13
CVE-2026-208607.894.5HIGH—2026-01-13
CVE-2026-208497.560.4HIGH—2026-01-13
CVE-2026-208476.569.3MEDIUM—2026-01-13

KEV entries

CISA Known Exploited Vulnerabilities (newest addition first)
CVEKEV addedCVSSEPSS %ileSeverity
CVE-2025-298242025-04-087.896.2HIGH
CVE-2025-266332025-03-117.098.1HIGH
CVE-2024-352502024-12-167.897.8HIGH
CVE-2024-435722024-10-087.899.2HIGH
CVE-2024-434612024-09-168.898.9HIGH
CVE-2024-382172024-09-105.495.2MEDIUM
CVE-2024-380142024-09-107.893.0HIGH
CVE-2023-368842023-07-177.599.9HIGH
CVE-2023-233762023-02-147.895.5HIGH
CVE-2023-218232023-02-147.892.2HIGH
CVE-2022-411282022-11-088.897.7HIGH
CVE-2022-410732022-11-087.882.6HIGH
CVE-2022-301902022-06-147.899.9HIGH
CVE-2021-422872022-04-117.599.4HIGH
CVE-2021-422782022-04-117.599.3HIGH
CVE-2021-344842022-03-317.897.4HIGH
CVE-2021-413792022-03-035.597.2MEDIUM
CVE-2020-10542021-11-037.098.9HIGH
CVE-2021-16752021-11-037.899.7HIGH
CVE-2021-404442021-11-038.899.9HIGH
CVE-2021-369552021-11-037.889.8HIGH
CVE-2021-369422021-11-037.599.2HIGH
CVE-2021-345272021-11-038.8100.0HIGH
CVE-2021-344482021-11-036.898.5MEDIUM
CVE-2021-319792021-11-037.890.8HIGH

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.