Loading vulnerability…
CVE-2026-20922 is a heap-based buffer overflow vulnerability in Windows New Technology File System (NTFS). The flaw affects NTFS processing in a way that allows memory corruption and can be exploited by an authorized attacker to execute code locally on the target system. Microsoft classified the issue as a Windows NTFS remote code execution vulnerability and assessed it as more likely to be exploited. Available reporting indicates the bug is one of two related NTFS heap-based buffer overflow issues addressed in the January 2026 security updates.
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.
Windows NTFS remote code execution vulnerability assessed as 'Exploitation More Likely' by Microsoft; no exploitation reported in the content.
A Windows NTFS heap-based buffer overflow that can lead to arbitrary code execution; assessed by Microsoft as 'Exploitation More Likely'.
A remote code execution vulnerability in Windows NTFS that Microsoft assessed as more likely to be exploited.
A heap-based buffer overflow in Windows NTFS that can lead to code execution (described as RCE, with local execution context in the content).
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.