CVE-2023-45165

Local denial of service via SMB client

Published Dec 22, 2023 · Updated Apr 17, 2025

Denial of service in IBM AIX 7.2 and 7.3 allows local users to interrupt the SMB client through a crafted request. IBM identifies the affected locus as the AIX SMB client daemon and does not disclose the malformed input operation that triggers failure. A non-privileged local user must reach the daemon; the reported consequence is service interruption without 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

Denial of service in IBM AIX 7.2 and 7.3 allows local users to interrupt the SMB client through a crafted request. IBM identifies the affected locus as the AIX SMB client daemon and does not disclose the malformed input operation that triggers failure. A non-privileged local user must reach the daemon; the reported consequence is service interruption without confidentiality or integrity impact.

The record

CVE
CVE-2023-45165
Published
Dec 22, 2023
Updated
Apr 17, 2025
Vendor
IBM
Product
AIX
Classifications
T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 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

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

IBM · AIXversion=7.2, 7.3

Published CVSS scores

6.2IBMCVSS: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

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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