CVE tracker / CVE-2026-23670

CVE-2026-23670

CVE-2026-23670 is the Windows Virtualization-Based Security (VBS) Security Feature Bypass Vulnerability. Microsoft rates it Important, CVSS 5.7. It is not in CISA's Known Exploited Vulnerabilities catalog. Published April 14, 2026.

Risk summary

MediumSecurity Feature Bypass
5.7
CVSS v3 base
0.3%
EPSS: chance of exploitation in 30 days
Medium
Severity
Important
Microsoft's rating
Less Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to bypass a security feature locally.”

How to fix it

Microsoft lists 27 affected products and the update that fixes each:

What Microsoft changed

Details

Weakness
CWE-822: Untrusted Pointer Dereference
Publicly disclosed (Microsoft)
No
Exploited (Microsoft)
No
Known exploited (CISA KEV)
Not listed
Published
April 14, 2026
Last revised
April 14, 2026

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References

Microsoft Security Update Guide NVD CVE record CWE

From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.