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Bitpixie is a Windows Boot Manager security feature bypass in BitLocker tracked as CVE-2023-21563. The flaw occurs in the PXE soft reboot path on UEFI systems, where the bootloader fails to wipe derived BitLocker key material, including the Volume Master Key, from memory before loading the next boot image after a failed boot attempt. Because the key material remains resident in RAM, an attacker can abuse a downgrade to a vulnerable boot manager and trigger the PXE soft reboot flow to recover the BitLocker key and defeat disk encryption protections. The issue affects BitLocker deployments that rely on unattended TPM-based unlocking and has been described as impacting both legacy and Secure Boot integrity validation in vulnerable configurations.
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No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows Boot Manager vulnerability that leaves the BitLocker Volume Master Key in RAM after a failed PXE soft reboot, enabling extraction of the key and bypass of BitLocker.
A local privilege escalation vulnerability in Windows Boot Manager (bitpixie) that allows attackers to bypass BitLocker encryption via downgrade attacks.
A Windows Boot Manager / BitLocker vulnerability where the Volume Master Key (VMK) is not cleared from memory during PXE soft reboot recovery flow, enabling extraction of the disk encryption key and offline decryption of BitLocker-protected disks under default TPM/Secure Boot unattended unlock configurations.
Security feature bypass in BitLocker (Windows full-disk encryption) that may allow bypassing disk encryption protections and accessing the underlying OS/data (details limited 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.