Loading vulnerability…
CVE-2023-21560 is a Windows Boot Manager security feature bypass vulnerability affecting the Windows boot environment. Available reporting places it in the class of bootloader and pre-OS flaws that can undermine platform protections tied to trusted boot, and it has also been associated with BitLocker encryption bypass scenarios. It is referenced alongside other boot-environment issues that enable arbitrary code execution before the operating system fully loads, indicating that exploitation occurs in the trusted boot chain rather than in normal user-mode or kernel-mode runtime. Specific vulnerable functions or implementation details are not available in the provided information.
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 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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Microsoft boot-related vulnerability listed as a BitLocker Encryption Bypass in a comparative table of Secure Boot and bootloader issues.
A security feature bypass vulnerability affecting Windows Boot Manager.
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.