Security-feature bypass via aliased-memory pointer dereference
Published Apr 14, 2026 · Updated Apr 14, 2026
Untrusted pointer dereference in Microsoft Windows VBS Enclave allows local users with administrator rights to bypass isolation. The enclave dereferences an untrusted address after writable DIMM SPD data makes aliased physical memory appear to occupy distinct addresses. Exploitation requires local administrative access and susceptible memory hardware, and grants arbitrary memory reads and writes affecting the secure kernel and protected defenses.
Summary
What happened
Untrusted pointer dereference in Microsoft Windows VBS Enclave allows local users with administrator rights to bypass isolation. The enclave dereferences an untrusted address after writable DIMM SPD data makes aliased physical memory appear to occupy distinct addresses. Exploitation requires local administrative access and susceptible memory hardware, and grants arbitrary memory reads and writes affecting the secure kernel and protected defenses.
The record
- CVE
- CVE-2026-23670
- Published
- Apr 14, 2026
- Updated
- Apr 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-822, T1562.001
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Apr 14, 2026CVE publishedPublication date reported by the CVE source.
- Apr 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.17763.0 <10.0.17763.8644
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Download More RAM research demonstrationproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo