CVE-2023-45178Network attack vector

Authenticated service interruption via crafted CLI request

Published Dec 3, 2023 · Updated Feb 13, 2025

Denial of service in IBM Db2 Client 11.5.8 through 11.5.9 allows remote authenticated users to cause a service interruption via a crafted request. IBM has not disclosed the CLI locus or the operation performed on the crafted request and intentionally withholds replication details. The issue is limited to Windows Client editions and requires low privileges; Linux and UNIX editions are unaffected, and only availability is impacted.

CVSS severity6.5
Medium
EPSS probability1.09%
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 Db2 Client 11.5.8 through 11.5.9 allows remote authenticated users to cause a service interruption via a crafted request. IBM has not disclosed the CLI locus or the operation performed on the crafted request and intentionally withholds replication details. The issue is limited to Windows Client editions and requires low privileges; Linux and UNIX editions are unaffected, and only availability is impacted.

The record

CVE
CVE-2023-45178
Published
Dec 3, 2023
Updated
Feb 13, 2025
Vendor
IBM
Product
IBM Db2 for Linux, UNIX, and Windows
Classifications
CWE-20, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 3, 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?

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

  1. Affected versionversion=11.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Db2 for Linux, UNIX, and Windowsversion=11.5

Published CVSS scores

6.5IBM CorporationCVSS:3.0/AV:N/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)
Vectornetwork
Privilegesauthenticated
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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