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.

Microsoft Exchange Server Subscription Edition RTM

Product reference — Microsoft Exchange Server Subscription Edition RTM 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
CVEs2020
KEV entries11
Rate & severity
KEV/100Med CVSSMed EPSSCHML
5.07.8.006611090

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
2026-021
2026-030
2026-040
2026-051
2026-067
2026-074
2026-087

Notable CVEs

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

Notable (ranked)
CVECVSSEPSS %ileSeverityKEVFirst seen
CVE-2026-428978.199.3HIGHYES2026-05-15
CVE-2026-455025.097.3MEDIUM—2026-06-09
CVE-2026-215276.594.1MEDIUM—2026-02-10
CVE-2026-550097.874.0HIGH—2026-07-14
CVE-2026-629126.568.4MEDIUM—2026-08-11
CVE-2026-550089.655.3CRITICAL—2026-07-14
CVE-2026-455048.855.2HIGH—2026-06-09
CVE-2026-629118.050.9HIGH—2026-08-11
CVE-2026-629108.849.5HIGH—2026-08-11
CVE-2026-550058.849.0HIGH—2026-07-14
CVE-2026-658138.848.4HIGH—2026-08-11
CVE-2026-629138.847.0HIGH—2026-08-11
CVE-2026-629156.539.8MEDIUM—2026-08-11
CVE-2026-455838.139.2HIGH—2026-06-09
CVE-2026-455036.537.2MEDIUM—2026-06-09

Recent CVEs

Most recently seen
CVECVSSEPSS %ileSeverityKEVFirst seen
CVE-2026-658138.848.4HIGH—2026-08-11
CVE-2026-629156.539.8MEDIUM—2026-08-11
CVE-2026-629145.426.5MEDIUM—2026-08-11
CVE-2026-629118.050.9HIGH—2026-08-11
CVE-2026-629138.847.0HIGH—2026-08-11
CVE-2026-629126.568.4MEDIUM—2026-08-11
CVE-2026-629108.849.5HIGH—2026-08-11
CVE-2026-550097.874.0HIGH—2026-07-14
CVE-2026-550089.655.3CRITICAL—2026-07-14
CVE-2026-550058.849.0HIGH—2026-07-14
CVE-2026-550067.812.1HIGH—2026-07-14
CVE-2026-476315.428.6MEDIUM—2026-06-09
CVE-2026-455838.139.2HIGH—2026-06-09
CVE-2026-455048.855.2HIGH—2026-06-09
CVE-2026-455036.537.2MEDIUM—2026-06-09

KEV entries

CISA Known Exploited Vulnerabilities (newest addition first)
CVEKEV addedCVSSEPSS %ileSeverity
CVE-2026-428972026-05-158.199.3HIGH

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.