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CVE-2026-46032VulnerabilityPublished Updated

Microsoft · KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-46032· High

Not known to be exploited · fixed in e6318570a9b4e137b0b744832b920b38bb069561 : patch Microsoft soon.

Data as of 30 Oct 2026, 11:52 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
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.
Patch
Available – fixed in e6318570a9b4e137b0b744832b920b38bb069561, b0eb0a8959ac2b808eb11548d002fe1f9b5650cc, af79992ecdb6817970d757fb5d853b8d9b55a0d6 +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ d82aaef9c88aa27bce63751d6d6329920b1fe8da, < e6318570a9b4e137b0b744832b920b38bb069561
Fixed in
  • e6318570a9b4e137b0b744832b920b38bb069561
LinuxLinuxAffected
  • ≥ d82aaef9c88aa27bce63751d6d6329920b1fe8da, < b0eb0a8959ac2b808eb11548d002fe1f9b5650cc
Fixed in
  • b0eb0a8959ac2b808eb11548d002fe1f9b5650cc
LinuxLinuxAffected
  • ≥ d82aaef9c88aa27bce63751d6d6329920b1fe8da, < af79992ecdb6817970d757fb5d853b8d9b55a0d6
Fixed in
  • af79992ecdb6817970d757fb5d853b8d9b55a0d6
LinuxLinuxAffected
  • ≥ d82aaef9c88aa27bce63751d6d6329920b1fe8da, < 9a738cf170a4a2332ea3a15e23ec65b5757fe4a1
Fixed in
  • 9a738cf170a4a2332ea3a15e23ec65b5757fe4a1
LinuxLinuxAffected
  • ≥ d82aaef9c88aa27bce63751d6d6329920b1fe8da, < 5d291ef0585ed880ed4dd71ea1a5965e0a65fb53
Fixed in
  • 5d291ef0585ed880ed4dd71ea1a5965e0a65fb53
LinuxLinuxAffected
  • ≥ d82aaef9c88aa27bce63751d6d6329920b1fe8da, < 2e661773890e6ba6b16064fad961da3dd311be43
Fixed in
  • 2e661773890e6ba6b16064fad961da3dd311be43

Description

A vulnerability identified as CVE-2026-46032 affects Microsoft products, specifically version 3.0. The issue involves a triple fault occurring if the restoration of the host CR3 register fails during a nested VM exit in the KVM nSVM virtualization environment. No CVSS score or detailed technical impact information is provided.

References

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