Windows Boot Manager Secure Boot Security Feature Bypass
CVE-2023-24932 is a security feature bypass vulnerability in Microsoft Windows Boot Manager that can be used to circumvent UEFI Secure Boot protections. The issue is associated with the BlackLotus UEFI bootkit and was addressed by Microsoft in May 2023. The provided content indicates the flaw affects the Windows boot chain by allowing use of an unsecured or vulnerable boot path so that untrusted software can execute during the boot process before the operating system fully loads. Microsoft’s remediation guidance for this issue includes not only patching the underlying flaw but also managing Windows Boot Manager revocations and Secure Boot DBX updates to prevent rollback to still-trusted vulnerable boot components.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No valid public exploits. Mallory filtered out 3 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
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.
Recent activity
22 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in older Windows bootloaders that was exploited by the BlackLotus UEFI bootkit to bypass Secure Boot.
A Windows Secure Boot-related vulnerability that may be exploited by a UEFI bootkit component to maintain persistence even after a full OS reinstall, according to the report.
A Windows Boot Manager vulnerability associated with BlackLotus and potential UEFI bootkit persistence; in this content it is mentioned as a possible exploit path used to achieve persistence that could survive OS reinstalls.
A vulnerability identified as CVE-2023-24932 that may have been exploited to deploy a UEFI bootkit in attacks linked to FishMonger.
The version that knows your environment.
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.