Microsoft — Security Activity Report

Windows + Azure + Office (MSRC advisories)

Generated Jul 22, 2026Cohort: 9 vendors with ≥10 CVE advisoriesMethodology ↗

CVE Disclosure Volume

Total all-time: 22,545 CVEs with Microsoft advisories. Source: NVD CVE records joined with vendor advisory publish dates.

2,25420222,10220233,40920243,74820255,0872026

Severity Composition

↑ +3.8 pp

56.0% of Microsoft's 22,545 CVEs are CRITICAL or HIGH severity. Industry median: 52.2%. Source: NVD CVSS v3.1.

CRITICAL 1,009 (4.5%)HIGH 11,611 (51.5%)MEDIUM 8,840 (39.2%)LOW 455 (2.0%)NONE 388 (1.7%)

CISA KEV Listings

at industry median

129 of 13,064 Microsoft CVEs in the last 3 years are on CISA's Known Exploited Vulnerabilities catalog (1.0%). Industry median: 1.0%.

Source: CISA Known Exploited Vulnerabilities catalog (current snapshot). KEV listing means CISA observed active in-the-wild exploitation.

Vendor Patch Velocity

↓ -6.5 days

Median time from CVE disclosure to Microsoft advisory: 8 days (p25 2 days – p75 52 days). Industry median: 15 days.

Sample size: 8,722 CVE→advisory pairs over the last 3 years. Source: vendor advisory published_at minus CVE published.

Top Recurring Weakness Classes

Most-frequently mapped CWEs across Microsoft's last 3 years of CVE disclosures. Source: NVD — CWE mapping per MITRE taxonomy.

  • CWE-416Use After Free1,972 CVEs
  • CWE-476NULL Pointer Dereference897 CVEs
  • CWE-125Out-of-bounds Read833 CVEs
  • CWE-122Heap-based Buffer Overflow809 CVEs
  • CWE-20Improper Input Validation539 CVEs

Recent Security Advisories

Latest advisories published by Microsoft, straight from the vendor's own feed. Severity labels are the vendor's — scales differ across vendors.

  • CVE-2024-5841
    Jul 20, 2026

    Chromium: CVE-2024-5841 Use after free in V8

    CVE-2024-5841
  • CVE-2024-5835
    Jul 20, 2026

    Chromium: CVE-2024-5835 Heap buffer overflow in Tab Groups

    CVE-2024-5835
  • CVE-2024-5837
    Jul 20, 2026

    Chromium: CVE-2024-5837 Type Confusion in V8

    CVE-2024-5837
  • CVE-2024-5844
    Jul 20, 2026

    Chromium: CVE-2024-5844 Heap buffer overflow in Tab Strip

    CVE-2024-5844
  • CVE-2024-5833
    Jul 20, 2026

    Chromium: CVE-2024-5833 Type Confusion in V8

    CVE-2024-5833
  • CVE-2024-5839
    Jul 20, 2026

    Chromium: CVE-2024-5839 Inappropriate Implementation in Memory Allocator

    CVE-2024-5839
  • CVE-2024-5836
    Jul 20, 2026

    Chromium: CVE-2024-5836 Inappropriate Implementation in DevTools

    CVE-2024-5836
  • CVE-2024-5834
    Jul 20, 2026

    Chromium: CVE-2024-5834 Inappropriate implementation in Dawn

    CVE-2024-5834

Full advisory archive: /pulse/vendor-advisories →

Data sources & corrections

  • NVD National Vulnerability Database (nvd.nist.gov) — CVE records + CVSS v3.1 severity
  • MITRE cvelistV5 (github.com/CVEProject/cvelistV5) — CNA-published CVE timestamps
  • CISA Known Exploited Vulnerabilities catalog (cisa.gov/known-exploited-vulnerabilities-catalog)
  • Vendor security advisories (RHSA, USN, MSRC, GHSA, etc.) — published_at timestamps
  • MITRE CWE taxonomy (cwe.mitre.org) — weakness class mappings

Snapshot generated Jul 22, 2026. Industry medians refresh every 6 hours; raw vendor counts are queried live on each request.

Spot a factual error in this report?

Email support@echelongraph.io with the specific number you're disputing and a link to the authoritative source. We review every report and publish corrections on the methodology page.