How severe is CVE-2018-16089?

CVE-2018-16089 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-16089 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16089?

CVE-2018-16089 affects Lenovo System Management Module Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-16089?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-16089 published?

CVE-2018-16089 was published on 2018-11-27 and last updated on 2026-06-17.

CVE-2018-16089

CVE-2018-16089 is a high-severity vulnerability in Lenovo System Management Module Firmware with a CVSS 3.x base score of 7.5. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 8.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Lenovo System Management Module Firmware
Published: 2018-11-27
Last modified: 2026-06-17

Description

In System Management Module (SMM) versions prior to 1.06, a field in the header of SMM firmware update images is insufficiently sanitized, allowing post-authentication command injection on the SMM as the root user.

Frequently asked questions

What is CVE-2018-16089?: In System Management Module (SMM) versions prior to 1.06, a field in the header of SMM firmware update images is insufficiently sanitized, allowing post-authentication command injection on the SMM as the root user.
How severe is CVE-2018-16089?: CVE-2018-16089 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-16089 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16089?: CVE-2018-16089 affects Lenovo System Management Module Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-16089?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-16089 published?: CVE-2018-16089 was published on 2018-11-27 and last updated on 2026-06-17.

References

https://support.lenovo.com/us/en/solutions/LEN-24374

Affected products (1)

cpe:2.3:o:lenovo:system_management_module_firmware:*:*:*:*:*:*:*:*

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