CVE-2024-21844

Unauthenticated service interruption via firmware integer overflow

Published Aug 14, 2024 · Updated Nov 3, 2025

Integer overflow in Intel Converged Security and Manageability Engine firmware allows attackers to interrupt service via adjacent access. Intel identifies the faulty operation only as an integer overflow in firmware and has not disclosed the affected routine, input field, or arithmetic. Exploitation requires no privileges or user interaction but does require adjacent access, and the disclosed consequence is service interruption.

CVSS severity4.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Intel Converged Security and Manageability Engine firmware allows attackers to interrupt service via adjacent access. Intel identifies the faulty operation only as an integer overflow in firmware and has not disclosed the affected routine, input field, or arithmetic. Exploitation requires no privileges or user interaction but does require adjacent access, and the disclosed consequence is service interruption.

The record

CVE
CVE-2024-21844
Published
Aug 14, 2024
Updated
Nov 3, 2025
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Converged Security and Manageability Engine
Classifications
CWE-190, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=See references

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Topcon Positioning Systems, Inc. · Intel Converged Security and Manageability Engineversion=See references

Published CVSS scores

4.3Intel CorporationCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.3Intel CorporationCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

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

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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