Vulnerability Intelligence Report
CVE-2022-34303
A flaw was found in Eurosoft bootloaders before 2022-06-01. An attacker may use this bootloader to bypass or tamper with Secure Boot protections. In order to load and execute arbitrary code in the pre-boot stage, an attacker simply needs to replace the existing signed bootloader currently in use with this bootloader. Access to the EFI System Partition is required for booting using external media.
No Active Exploit Signals
CVSS Base Score
6.7
MEDIUM
EPSS Probability:0.80%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
—
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| eurosoft-uk | uefi_bootloader | all |
| redhat | enterprise_linux | 7.0, 8.0, 9.0 |
| microsoft | windows_10 | 20h2, 21h1, 21h2, 1607, 1809 |
| microsoft | windows_11 | all |
| microsoft | windows_8.1 | all |
| microsoft | windows_rt_8.1 | all |
| microsoft | windows_server_2012 | r2 |
| microsoft | windows_server_2016 | 20h2 |
| microsoft | windows_server_2019 | all |
| microsoft | windows_server_2022 | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.797%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | MITRE Corporation · N/A · USA |
| Reserved | 2022-06-22T00:00:00 |
| Published | 2022-08-26T00:00:00 |
| Last Updated | 2024-08-03T09:07:16 |
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