Loading vulnerability…
CVE-2026-23670 is a local security feature bypass vulnerability in Windows Virtualization-Based Security (VBS) Enclave caused by an untrusted pointer dereference. The flaw affects VBS isolation guarantees and can allow an authorized local attacker to undermine Virtual Secure Mode separation between VTL0 and VTL1. Public reporting associates the issue with the “Download More RAM” attack chain, which abuses writable memory-module configuration data to induce physical memory aliasing and then leverages that condition to read and modify protected physical memory, including secure kernel-related regions. In demonstrated exploitation, the attacker used the resulting access to patch Secure Kernel Code Integrity logic, weaken Hypervisor-Enforced Code Integrity, and bypass VBS protections. Microsoft described the core issue as an untrusted pointer dereference in VBS Enclave that enables local bypass of a security boundary rather than a standalone remote code execution flaw.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.