CVE-2017-3775
Some Lenovo System x server BIOS/UEFI versions, when Secure Boot mode is enabled by a system...
Some Lenovo System x server BIOS/UEFI versions, when Secure Boot mode is enabled by a system administrator, do not properly authenticate signed code before booting it. As a result, an attacker with physical access to the system could boot unsigned code.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Some Lenovo System x server BIOS/UEFI versions, when Secure Boot mode is enabled by a system administrator, do not properly authenticate signed code before booting it. As a result, an attacker with physical access to the system could boot unsigned code.
- Record
CVE-2017-3775- CVSS 3.0
- 6.4 Medium
CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.9 Medium
AV:L/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-287
- Updated
- 2026-11-02
CVE List No score
Some Lenovo System x server BIOS/UEFI versions, when Secure Boot mode is enabled by a system administrator, do not properly authenticate signed code before booting it. As a result, an attacker with physical access to the system could boot unsigned code.
- Record
CVE-2017-3775- Updated
- 2026-11-02
EUVDEUVD-2017-12892 No score
Some Lenovo System x server BIOS/UEFI versions, when Secure Boot mode is enabled by a system administrator, do not properly authenticate signed code before booting it. As a result, an attacker with physical access to the system could boot unsigned code.
- Record
EUVD-2017-12892- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-m3r2-464w-g5x4
Some Lenovo System x server BIOS/UEFI versions, when Secure Boot mode is enabled by a system...
Some Lenovo System x server BIOS/UEFI versions, when Secure Boot mode is enabled by a system administrator, do not properly authenticate signed code before booting it. As a result, an attacker with physical access to the system could boot unsigned code.
- Record
GHSA-m3r2-464w-g5x4- CVSS 3.0
- 6.4 Medium
CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
Affected products
- lenovo flex system x240 m5 bios
- lenovo flex system x280 x6 bios
- lenovo flex system x480 x6 bios
- lenovo flex system x880 bios
- lenovo nextscale nx360 m5 bios
- lenovo system x3250 m6 bios
- lenovo system x3500 m5 bios
- lenovo system x3550 m5 bios
- lenovo system x3650 m5 bios
- lenovo system x3850 x6 bios
- lenovo system x3950 x6 bios
- lenovo group ltd. some lenovo flex system and lenovo system x products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-3775 is a medium vulnerability (CVSS 6.4) in Lenovo Flex System X240 M5 Bios, published May 4, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 18th percentile. No source names a fixed version.