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CVE-2018-9069

BIOS Write Protection Race Condition

Description

In some Lenovo IdeaPad consumer notebook models, a race condition in the BIOS flash device locking mechanism is not adequately protected against, potentially allowing an attacker with administrator access to alter the contents of BIOS.

Timeline

  1. ID reserved

    By lenovo

  2. · 6 months later

    Published

  3. · 6 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2018-9069, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1Medium5.9CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
EPSS (exploitation in 30 days)
0.53% · top 55% of all CVEs (10 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.

Affected products

References

1

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .