CVE•Published 2026-05-12•Modified 2026-05-15•2 articles on news•5 live references•NVD data
CVE-2026-40402Microsoft · Windows_11_23h2
Vulnerability data via NVD (ingested)
CVSS v3.1
9.3
CRITICAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS percentile
—
Weaknesses (CWE)
Description
Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.
Timeline
Published 2026-05-12
Modified 2026-05-15
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-40402Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Windows 11 23h2"Hosts Shodan identified as running Windows 11 23h2.
More intel sources (5)
Shodan report
vuln:CVE-2026-40402Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-40402Censys host search filtered to this CVE id.
grep.app
CVE-2026-40402Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-40402GitHub code search for direct mentions.
Google dork
"CVE-2026-40402" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-40402 on GitHub.