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CVE-2026-23670 is an untrusted pointer dereference vulnerability in Windows Virtualization-Based Security (VBS) Enclave components. An authorized local attacker can exploit the flaw to bypass Virtual Secure Mode isolation between VTL0 and VTL1. Research associated with the issue demonstrated that manipulation of writable memory-module configuration data can create physical-memory aliasing, enabling access to memory that should remain isolated and facilitating modification of secure-kernel code-integrity enforcement.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows Virtualization-Based Security (VBS) bypass involving manipulation of writable SPD EEPROM data on RAM modules to create memory aliasing and gain access to protected memory regions.
A Windows 11 security bypass technique that abuses rewritable DIMM configuration data to create memory aliasing, undermining VBS/HVCI protections and enabling actions such as disabling security tools and re-enabling vulnerable blocklisted drivers once an attacker already has privileged access.
A Microsoft-assigned vulnerability/issue associated with the 'Download More RAM' software-only memory aliasing attack that rewrites SPD EEPROM over SMBus/I2C to create RAM capacity aliasing and undermine Windows security protections.
A Windows security bypass issue in which writable SPD data on certain DDR4/DDR5 memory modules can be abused by a local administrator to create memory aliasing, bypass VBS/HVCI protections, patch skci.dll, and disable protections such as Microsoft Defender.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.