CVE-2017-3775

6.4 MEDIUM 0.3% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited with physical access without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2018-05-04 17:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 01:18 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.3% in the next 30 days (EPSS).
Severity: 6.4 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2018-05-04 17:29 UTC
Last modified: 2026-06-17 01:18 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Weakness: CWE-287 · Improper authentication
Record status: Modified

Affected

Lenovo Flex System x240 m5 Bios < 2.61
Lenovo Flex System x280 x6 Bios < 4.21
Lenovo Flex System x480 x6 Bios < 4.21
Lenovo Flex System x880 Bios < 4.21
Lenovo Nextscale nx360 m5 Bios < 2.61
Lenovo System x3250 m6 Bios < 2.23
Lenovo System x3500 m5 Bios < 2.61
Lenovo System x3550 m5 Bios < 2.61

Attack profile CVSS 3.0 · 6.4

Attack vector: Physical
Complexity: High
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2017-3775.md and follow it. Check whether this project is affected by CVE-2017-3775. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record