CVE-2023-30445Network attack vector

Database service interruption

Published Jul 8, 2023 · Updated Feb 13, 2025

Improper input validation in IBM Db2 10.5, 11.1, and 11.5 allows remote attackers to interrupt database service with a crafted table query. IBM identifies certain tables as the query locus but explicitly withholds the affected functionality and reproduction details, leaving the exact validation failure undisclosed. Network reachability is required; IBM's current CVSS assessment lists no privileges, while its 2023 bulletin lists low privileges, and the consequence is limited to service interruption.

CVSS severity7.5
High
EPSS probability1.37%
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 attackers to interrupt database service with a crafted table query. IBM identifies certain tables as the query locus but explicitly withholds the affected functionality and reproduction details, leaving the exact validation failure undisclosed. Network reachability is required; IBM's current CVSS assessment lists no privileges, while its 2023 bulletin lists low privileges, and the consequence is limited to service interruption.

The record

CVE
CVE-2023-30445
Published
Jul 8, 2023
Updated
Feb 13, 2025
Vendor
IBM
Product
IBM Db2 for Linux, UNIX, and Windows
Classifications
CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 8, 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
  2. Affected versionversion=10.5, 11.1, 11.5
  3. Affected versionversion=11.1
  4. Affected versionversion=11.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

7.5IBM CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.5IBM X-ForceCVSS: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
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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