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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2026-40402

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

CVSS 9.3 · CriticalBuzz score 25.4

Buzz score

Why this CVE is surfacing

Buzz score total 25.4

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 13.9 · diversity 11.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
13.9
3 evidence mentions in the snapshot
Diversity score
11.5
3 sources across 2 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
3 source links · newest first
  • Microsoft May 2026 Patch Tuesday: Many fixes, but no zero-daysHelp Net Security

    Microsoft has marked May 2026 Patch Tuesday by releasing fixes for 120+ CVE-numbered vulnerabilities, none of which (for a change) are actively exploited or have been publicly disclosed. Still, some deserve more consideration and should be addressed sooner than others. Patches to prioritize For Satnam Narang, senior staff research engineer at Tenable, the four critical remote code execution bugs in Microsoft Word stand out in this release, and especially the two (CVE-2026-40361, CVE-2026-40364) that have … More →

    newswww.helpnetsecurity.comMay 12, 2026, 7:03 PM
  • 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
  • CVE-2026-40402 Windows Hyper-V Elevation of Privilege VulnerabilityMicrosoft MSRC

    Use after free in Windows Hyper-V allows an unauthorized 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
No public PoC repositories have been matched yet.

Related records

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