AWS — Security Activity Report

Amazon Web Services (Security Bulletins)

Generated Nov 2, 2026Cohort: 9 vendors with ≥10 CVE advisoriesMethodology ↗

CVE Disclosure Volume

Total all-time: 207 CVEs with AWS advisories. Source: NVD CVE records joined with vendor advisory publish dates.

0202202023020242720251792026

Severity Composition

↑ +12.4 pp

66.2% of AWS's 207 CVEs are CRITICAL or HIGH severity. Industry median: 53.8%. Source: NVD CVSS v3.1.

CRITICAL 25 (12.1%)HIGH 112 (54.1%)MEDIUM 70 (33.8%)

CISA KEV Listings

↑ +1.8 pp

5 of 206 AWS CVEs in the last 3 years are on CISA's Known Exploited Vulnerabilities catalog (2.4%). Industry median: 0.6%.

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

Vendor Patch Velocity

↓ -11.3 days

Median time from CVE disclosure to AWS advisory: <1 day (p25 <1 day – p75 <1 day). Industry median: 11 days.

Sample size: 163 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 AWS's last 3 years of CVE disclosures. Source: NVD — CWE mapping per MITRE taxonomy.

  • CWE-78OS Command Injection10 CVEs
  • CWE-918Server-Side Request Forgery (SSRF)9 CVEs
  • CWE-863Incorrect Authorization8 CVEs
  • CWE-283Unverified Ownership6 CVEs
  • CWE-327Use of a Broken or Risky Cryptographic Algorithm6 CVEs

Recent Security Advisories

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

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 (Red Hat RHSA, Ubuntu USN, Microsoft MSRC, Cisco PSIRT and other per-vendor feeds; the GitHub and OSV advisory databases are not used) — published_at timestamps
  • MITRE CWE taxonomy (cwe.mitre.org) — weakness class mappings

Snapshot generated Nov 2, 2026: when these counts and industry medians were computed. Vendors in the index are recomputed every 6 hours.

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