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 Server 2008 R2 Service Pack 1 (Server Core Installation)

Product reference — Windows Server 2008 R2 Service Pack 1 (Server Core Installation) 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
CVEs42826
KEV entries691
Rate & severity
KEV/100Med CVSSMed EPSSCHML
16.17.8.016916326860

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
2025-110
2025-120
2026-0126
2026-020
2026-030
2026-040
2026-050
2026-060
2026-070
2026-080
2026-090
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-2020-14725.599.9MEDIUMYES2020-08-17
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-2024-434516.599.7MEDIUMYES2024-11-12
CVE-2025-330738.899.7HIGHYES2025-06-10
CVE-2021-422877.599.5HIGHYES2022-04-11
CVE-2021-404497.899.5HIGHYES2021-10-13
CVE-2021-422787.599.5HIGHYES2022-04-11
CVE-2022-347137.899.3HIGHYES2022-08-09
CVE-2024-435727.899.3HIGHYES2024-10-08

Recent CVEs

Most recently seen
CVECVSSEPSS %ileSeverityKEVFirst seen
CVE-2026-209407.838.0HIGH—2026-01-13
CVE-2026-209364.339.8MEDIUM—2026-01-13
CVE-2026-209318.057.1HIGH—2026-01-13
CVE-2026-209297.586.6HIGH—2026-01-13
CVE-2026-209275.359.1MEDIUM—2026-01-13
CVE-2026-209256.597.1MEDIUM—2026-01-13
CVE-2026-209227.864.6HIGH—2026-01-13
CVE-2026-209217.567.0HIGH—2026-01-13
CVE-2026-208757.574.5HIGH—2026-01-13
CVE-2026-208726.597.4MEDIUM—2026-01-13
CVE-2026-208697.020.5HIGH—2026-01-13
CVE-2026-208688.871.8HIGH—2026-01-13
CVE-2026-208607.894.8HIGH—2026-01-13
CVE-2026-208497.562.4HIGH—2026-01-13
CVE-2026-208476.571.0MEDIUM—2026-01-13

KEV entries

CISA Known Exploited Vulnerabilities (newest addition first)
CVEKEV addedCVSSEPSS %ileSeverity
CVE-2023-364242026-04-137.896.1HIGH
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-2025-327012025-05-137.871.7HIGH
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
CVE-2025-298242025-04-087.896.4HIGH
CVE-2025-249832025-03-117.071.1HIGH
CVE-2025-249852025-03-117.890.0HIGH
CVE-2025-249912025-03-115.580.3MEDIUM
CVE-2025-249932025-03-117.882.1HIGH
CVE-2025-266332025-03-117.098.2HIGH
CVE-2025-214182025-02-117.874.5HIGH
CVE-2024-352502024-12-167.897.9HIGH
CVE-2024-491382024-12-107.897.9HIGH
CVE-2024-434512024-11-126.599.7MEDIUM
CVE-2024-435722024-10-087.899.3HIGH
CVE-2024-434612024-09-168.899.0HIGH
CVE-2024-382172024-09-105.495.5MEDIUM
CVE-2024-380142024-09-107.893.4HIGH

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.