CVE-2024-26836

Protected BIOS setting failure via late authentication

Published Apr 17, 2024 · Updated May 11, 2026

Improper operation ordering in Linux allows local users to disrupt protected BIOS configuration on Lenovo workstations with Admin passwords. The think-lmi current_value_store path sends the attribute-change WMI call before WmiOpcodePasswordAdmin, so firmware receives authentication too late. The condition requires an enabled Admin password; public sources describe unreliable protected-setting changes but no broader consequence.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper operation ordering in Linux allows local users to disrupt protected BIOS configuration on Lenovo workstations with Admin passwords. The think-lmi current_value_store path sends the attribute-change WMI call before WmiOpcodePasswordAdmin, so firmware receives authentication too late. The condition requires an enabled Admin password; public sources describe unreliable protected-setting changes but no broader consequence.

The record

CVE
CVE-2024-26836
Published
Apr 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.17
  2. Affected versionversion=640a5fa50a42b99bfa2a0ec51b4ea9591d9bd055 <2bfbe1e0aed00ba51d58573c79452fada3f62ed4
  3. Affected versionversion=640a5fa50a42b99bfa2a0ec51b4ea9591d9bd055 <2deb10a99671afda30f834e95e5b992a805bba6a
  4. Affected versionversion=640a5fa50a42b99bfa2a0ec51b4ea9591d9bd055 <6f7d0f5fd8e440c3446560100ac4ff9a55eec340

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.17; version=640a5fa50a42b99bfa2a0ec51b4ea9591d9bd055 <2bfbe1e0aed00ba51d58573c79452fada3f62ed4; version=640a5fa50a42b99bfa2a0ec51b4ea9591d9bd055 <2deb10a99671afda30f834e95e5b992a805bba6a; version=640a5fa50a42b99bfa2a0ec51b4ea9591d9bd055 <6f7d0f5fd8e440c3446560100ac4ff9a55eec340

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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