CVE-2023-22329

Service interruption via improper BIOS input validation

Published Nov 14, 2023 · Updated Feb 13, 2025

Improper input validation in BIOS firmware for some Intel processors allows remote authenticated users to interrupt service via adjacent access. The BIOS firmware inadequately validates input received through an adjacent-access path; Intel has not disclosed the input format, processing locus, or failure mode. Exploitation requires low-privileged authentication and high-complexity adjacent access, and the reported consequence is limited to reduced availability.

CVSS severity2.6
Low
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in BIOS firmware for some Intel processors allows remote authenticated users to interrupt service via adjacent access. The BIOS firmware inadequately validates input received through an adjacent-access path; Intel has not disclosed the input format, processing locus, or failure mode. Exploitation requires low-privileged authentication and high-complexity adjacent access, and the reported consequence is limited to reduced availability.

The record

CVE
CVE-2023-22329
Published
Nov 14, 2023
Updated
Feb 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1499.004
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.6Intel CorporationCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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