CVE-2023-45169

Local denial of service via pmsvcs input

Published Jan 11, 2024 · Updated Jun 17, 2025

Improper input validation in IBM AIX 7.2, 7.3, and VIOS 3.1 allows local users to interrupt the system through the pmsvcs kernel extension. IBM has not published which pmsvcs input or validation operation triggers the failure. Non-privileged local access is sufficient, and the documented consequence is limited to denial of service rather than data disclosure or modification.

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 IBM AIX 7.2, 7.3, and VIOS 3.1 allows local users to interrupt the system through the pmsvcs kernel extension. IBM has not published which pmsvcs input or validation operation triggers the failure. Non-privileged local access is sufficient, and the documented consequence is limited to denial of service rather than data disclosure or modification.

The record

CVE
CVE-2023-45169
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

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.2IBM CorporationCVSS:3.1/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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