Loading vulnerability…
CVE-2022-34303 is a Secure Boot bypass vulnerability in Eurosoft UEFI bootloaders released before 2022-06-01. The affected bootloader is signed and therefore trusted by Secure Boot, but it can be abused to undermine Secure Boot protections. An attacker who can replace the legitimate signed bootloader with the vulnerable Eurosoft bootloader can then load and execute arbitrary code during the pre-boot phase. This breaks the intended trust chain of UEFI Secure Boot by allowing a trusted-but-dangerous boot component to be used as a vehicle for unauthorized code execution before the operating system starts.
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 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.
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.
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.