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A Secure Boot bypass vulnerability exists in New Horizon Data Systems bootloaders released before 2022-06-01. The affected bootloader is signed and therefore trusted by UEFI Secure Boot implementations that accept the relevant Microsoft third-party UEFI signing chain, but it does not provide adequate protection against misuse as a pre-boot execution path. An attacker can replace the legitimate signed bootloader used by a target system with the vulnerable New Horizon Data Systems bootloader and then use it to load and execute arbitrary code during the pre-boot phase, thereby bypassing or tampering with Secure Boot protections. The issue is fundamentally a trust failure in which a signed third-party UEFI application can be abused to subvert the Secure Boot chain rather than enforce it.
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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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A cited example of a non-shim third-party UEFI application vulnerability that can enable Secure Boot bypass; mentioned only as background.
A Secure Boot-related boot loader bypass vulnerability involving the New Horizon Data Systems Inc boot loader, addressed via Secure Boot DBX updates.
A vulnerability in third-party UEFI bootloaders signed by Microsoft allows attackers to bypass Secure Boot, undermining the boot process security.
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.