CVE-2023-45171

Local denial of service

Published Jan 11, 2024 · Updated Jun 17, 2025

Improper input validation in the IBM AIX kernel in 7.2, 7.3, and VIOS 3.1 allows local users to cause a denial of service. IBM has not disclosed the affected kernel routine, the untrusted input it accepts, or the invalid operation that triggers the failure. A non-privileged local execution context is sufficient; the documented consequence is limited to service interruption, with no confidentiality or integrity impact.

CVSS severity6.2
Medium
EPSS probability0.17%
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 the IBM AIX kernel in 7.2, 7.3, and VIOS 3.1 allows local users to cause a denial of service. IBM has not disclosed the affected kernel routine, the untrusted input it accepts, or the invalid operation that triggers the failure. A non-privileged local execution context is sufficient; the documented consequence is limited to service interruption, with no confidentiality or integrity impact.

The record

CVE
CVE-2023-45171
Published
Jan 11, 2024
Updated
Jun 17, 2025
Vendor
IBM
Product
AIX
Classifications
CWE-20, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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?

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

  1. Affected versionversion=7.2, 7.3, VIOS 3.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

IBM · AIXversion=7.2, 7.3, VIOS 3.1

Published CVSS scores

6.2IBM CNACVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.2IBM Security BulletinCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

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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