slow flush hypercalls · KVM: x86: check for nEPT/nNPT
Affects MicrosoftSource GCVE Database
Not known to be exploited.
Data as of 29 Oct 2026, 19:04 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 2 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Security Response Center Microsoft | Affected
| Fixed in– |
Description
CVE-2026-46131 is a vulnerability related to KVM on x86 architectures involving checks for nEPT/nNPT in slow flush hypercalls. The information provided is minimal and does not include detailed technical specifics or impact metrics. No CVSS score is available, and no known exploits in the wild have been reported. The affected version explicitly stated is version 3.0 of the Microsoft product involved.