Eurosoft Boot Loader Bypass
A flaw was found in Eurosoft UEFI bootloaders before 2022-06-01 that allows Secure Boot protections to be bypassed. The vulnerable bootloader is signed and therefore trusted by Secure Boot, but it can be abused to load and execute arbitrary code during the pre-boot phase. An attacker can replace the legitimate signed bootloader in use with the vulnerable Eurosoft bootloader and then use it to tamper with or bypass Secure Boot enforcement. This is a pre-OS trust-chain failure affecting the integrity of the boot process rather than a conventional operating-system-level memory corruption issue.
Are you exposed to this one?
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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 public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Secure Boot-related boot loader bypass vulnerability involving the Crypto Pro 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.
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.