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VulnerabilityPublished Updated

CVE-2026-47656: Microsoft Windows 10 Version 1607 · Protection Mechanism Failure

Affects Microsoft Windows 10 Version 1607Source CVE Database V5

0

Not known to be exploited · CVSS 7.9 High : upgrade to 10.0.14393.9234 soon.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
7.9High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 10.0.14393.9234, 10.0.17763.8880, 10.0.19044.7417 +9
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
MicrosoftWindows 10 Version 1607Affected
  • >=10.0.14393.0 <10.0.14393.9234
Fixed in
  • 10.0.14393.9234
MicrosoftWindows 10 Version 1809Affected
  • >=10.0.17763.0 <10.0.17763.8880
Fixed in
  • 10.0.17763.8880
MicrosoftWindows 10 Version 21H2Affected
  • >=10.0.19044.0 <10.0.19044.7417
Fixed in
  • 10.0.19044.7417
MicrosoftWindows 10 Version 22H2Affected
  • >=10.0.19045.0 <10.0.19045.7417
Fixed in
  • 10.0.19045.7417
MicrosoftWindows 11 version 23H2Affected
  • >=10.0.22631.0 <10.0.22631.7219
Fixed in
  • 10.0.22631.7219
MicrosoftWindows 11 Version 23H2Affected
  • >=10.0.22631.0 <10.0.22631.7219
Fixed in
  • 10.0.22631.7219

AI-suggested

An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47656 for detailed patch information and installation instructions.

Description

Protection mechanism failure in Windows Boot Manager allows an authorized attacker to bypass a security feature locally.

References

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