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CVE-2021-28312 is a denial-of-service vulnerability in Windows NTFS. Public reporting identifies it as a Moderate-severity flaw addressed by Microsoft in the April 2021 security updates and notes that it was publicly disclosed prior to patching but not known to be exploited at the time of release. Available reporting further indicates that, on vulnerable Windows systems, the flaw can be abused to corrupt NTFS structures, potentially resulting in loss of file system metadata and rendering the system unstable or unusable. Specific vulnerable functions or code paths are not available in the provided information.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability used by Backdoorit to corrupt NTFS on vulnerable systems, causing complete loss of file information as part of the malware's destructive kill-switch capability.
A denial of service vulnerability in Windows NTFS that Microsoft said was publicly disclosed but not exploited.
A publicly known denial of service vulnerability in Windows NTFS, rated moderate.
A publicly known denial of service vulnerability in Windows NTFS, rated moderate.
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.