CVE-2023-47701Network attack vector

Authenticated service interruption via crafted query

Published Dec 4, 2023 · Updated Feb 13, 2025

Improper input validation in IBM Db2 10.5, 11.1, and 11.5 allows remote authenticated users to interrupt service with a crafted query. IBM has not disclosed the query form, affected parser or execution locus, or invalid input operation that triggers the denial of service. An account with CONNECT privileges and network access to Db2 is required; successful exploitation interrupts database availability on affected Linux and UNIX servers.

CVSS severity6.5
Medium
EPSS probability1.10%
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 Db2 10.5, 11.1, and 11.5 allows remote authenticated users to interrupt service with a crafted query. IBM has not disclosed the query form, affected parser or execution locus, or invalid input operation that triggers the denial of service. An account with CONNECT privileges and network access to Db2 is required; successful exploitation interrupts database availability on affected Linux and UNIX servers.

The record

CVE
CVE-2023-47701
Published
Dec 4, 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 4, 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=10.5, 11.1, 11.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM Db2 for Linux, UNIX, and Windowsversion=10.5, 11.1, 11.5

Published CVSS scores

5.3IBM Security BulletinCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5IBM CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/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.

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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