CVE detail
CVE-2026-40408
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 11.0 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
2 source links · newest first
- The May 2026 Security Update ReviewZero Day Initiative
take a closer look at some of the more interesting updates for this month, starting with a nasty-looking bug in DNS: - CVE-2026-41096 - Windows DNS Client Remote Code Execution Vulnerability This patch fixes a heap-based buffer overflow in the DNS Client triggered by a malicious DNS response. No authentication or user interaction needed, and since the
vendorwww.thezdi.comMay 12, 2026, 6:38 PM Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
vendormsrc.microsoft.comMay 12, 2026, 2:00 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2026-42825CVSS 7.0 · High
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
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Use after free in Windows SMB Client allows an authorized attacker to elevate privileges locally.
- CVE-2026-40406CVSS 7.5 · High
Use after free in Windows TCP/IP allows an unauthorized attacker to disclose information over a network.
- CVE-2026-40382CVSS 7.8 · High
Use after free in Windows Telephony Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-35416CVSS 7.0 · High
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
- CVE-2026-34347CVSS 7.0 · High
Use after free in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.