Loading vulnerability…
CVE-2026-20876 is a heap-based buffer overflow in Windows Virtualization-Based Security (VBS) Enclave that allows local elevation of privilege. The flaw affects a highly trusted isolation boundary within Windows and can be exploited by an authorized attacker to cross into more trusted execution layers. Available reporting indicates successful exploitation can grant Virtual Trust Level 2 (VTL2) privileges, undermining the protections provided by virtualization-based security.
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.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Local elevation of privilege in Windows VBS enclaves; likely used as part of a post-compromise chain per the content.
A Windows VBS Enclave elevation-of-privilege vulnerability (heap overflow) that can allow a high-privileged local attacker to escalate into VTL2, undermining virtualization-based isolation protections.
A Windows VBS Enclave elevation-of-privilege vulnerability (heap overflow) that can allow a high-privileged local attacker to escalate into VTL2, undermining virtualization-based isolation protections.
An elevation-of-privilege vulnerability impacting Windows Virtualization-Based Security (VBS) enclaves.
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.