CVE-2024-40885

Local privilege escalation via UEFI use-after-free

Published Nov 13, 2024 · Updated Nov 14, 2024

Use-after-free in Intel Server M20NTP BIOS UEFI firmware allows privileged local users to escalate privileges through local access. Intel identifies a freed-object reuse error in UEFI firmware but does not disclose the affected routine, freed object, or triggering input. Exploitation requires high privileges, high complexity, and a particular execution condition; Intel does not disclose the resulting privilege boundary.

CVSS severity8.7
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Intel Server M20NTP BIOS UEFI firmware allows privileged local users to escalate privileges through local access. Intel identifies a freed-object reuse error in UEFI firmware but does not disclose the affected routine, freed object, or triggering input. Exploitation requires high privileges, high complexity, and a particular execution condition; Intel does not disclose the resulting privilege boundary.

The record

CVE
CVE-2024-40885
Published
Nov 13, 2024
Updated
Nov 14, 2024
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Server M20NTP Family BIOS and Firmware
Classifications
CWE-416, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Nov 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 14, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <*
  2. Affected versionversion=See references

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Topcon Positioning Systems, Inc. · Intel Server M20NTP Family BIOS and Firmwareversion=0 <*; version=See references

Published CVSS scores

7.5IntelCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
8.7IntelCVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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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