CVEFinder.io

CVE-2026-40402

⛔ critical
🔍 Scan for this CVE
Summary

Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.

CVSS Score
9.3
Critical
EPSS Score
0.0
Exploit Probability
Published Date
2026-05-12
First Seen: 2026-05-17
📊 Relative Risk Intelligence

This CVE is High Risk - more severe than 88.6% of all 326,604 vulnerabilities in our database.

#37,253
Top 25% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 13, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Total
Complete system compromise possible
SSVC data provided by CISA
Last Modified 2026-05-15
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE IDs (Weakness Types)
CWE-416

📦 Affected Products 2

Vendor Product Status Affected Versions
microsoft windows_server_2022 Affected
< 10.0.20348.5074
microsoft windows_11_23h2 Affected
< 10.0.22631.7079

🔗 References 1

https://msrc.microsoft.com/update-guide/vulnerabilit...
Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-21530 🔶 medium 6.7 0.1 Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally. 2026-05-12
CVE-2026-32161 ⚠️ high 7.5 0.1 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Native WiFi Minip... 2026-05-12
CVE-2026-32170 🔶 medium 6.7 0.1 Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally. 2026-05-12
CVE-2026-32209 🔶 medium 4.4 0.0 Improper access control in Windows Filtering Platform (WFP) allows an authorized attacker to bypass a security feature l... 2026-05-12
CVE-2026-33834 ⚠️ high 7.8 0.0 Improper access control in Windows Event Logging Service allows an authorized attacker to elevate privileges locally. 2026-05-12
CVE-2026-33835 ⚠️ high 7.8 0.1 Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally. 2026-05-12
These CVEs affect the same products