CVE-2023-45172

Service interruption via improper window-system input validation

Published Dec 19, 2023 · Updated Aug 2, 2024

Improper input validation in IBM AIXwindows on AIX 7.2, AIX 7.3, and VIOS 3.1 allows local users to cause a service interruption. IBM identifies the affected X11.base.smt fileset but has not published the exact input, code locus, or validation operation that fails. Non-privileged local access is required, and the documented consequence is limited to loss of service without reported data disclosure or modification.

CVSS severity6.2
Medium
EPSS probability0.23%
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 AIXwindows on AIX 7.2, AIX 7.3, and VIOS 3.1 allows local users to cause a service interruption. IBM identifies the affected X11.base.smt fileset but has not published the exact input, code locus, or validation operation that fails. Non-privileged local access is required, and the documented consequence is limited to loss of service without reported data disclosure or modification.

The record

CVE
CVE-2023-45172
Published
Dec 19, 2023
Updated
Aug 2, 2024
Vendor
IBM
Product
AIX
Classifications
CWE-20, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=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 CorporationCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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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