How severe is CVE-2017-3775?

CVE-2017-3775 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over physical access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-3775 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-3775?

CVE-2017-3775 primarily affects Lenovo Flex System X240 M5 Bios. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-3775?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-3775 published?

CVE-2017-3775 was published on 2018-05-04 and last updated on 2026-06-17.

CVE-2017-3775

CVE-2017-3775 is a medium-severity vulnerability in Lenovo Flex System X240 M5 Bios with a CVSS 3.x base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v2: 6.9
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Lenovo Flex System X240 M5 Bios
Published: 2018-05-04
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2017-3775?: 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.
How severe is CVE-2017-3775?: CVE-2017-3775 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over physical access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-3775 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-3775?: CVE-2017-3775 primarily affects Lenovo Flex System X240 M5 Bios. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-3775?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-3775 published?: CVE-2017-3775 was published on 2018-05-04 and last updated on 2026-06-17.

References

https://support.lenovo.com/us/en/solutions/LEN-20241

Affected products (11)

cpe:2.3:o:lenovo:flex_system_x240_m5_bios:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:flex_system_x280_x6_bios:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:flex_system_x480_x6_bios:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:flex_system_x880_bios:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:nextscale_nx360_m5_bios:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:system_x3250_m6_bios:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:system_x3500_m5_bios:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:system_x3550_m5_bios:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:system_x3650_m5_bios:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:system_x3850_x6_bios:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:system_x3950_x6_bios:*:*:*:*:*:*:*:*

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