CVE-2026-1577

Modified Modified - Updated After Analysis

IBM Db2 Denial of Service Vulnerability

Publication date: 2026-04-30

Last updated on: 2026-05-10

Assigner: IBM Corporation

Description

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial of service due to improper neutralization of special elements in data query logic.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-04-30

Last Modified

2026-05-10

Generated

2026-07-06

AI Q&A

2026-05-01

EPSS Evaluated

2026-07-05

NVD

CVE-2026-1577

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	db2	From 11.5.0 (inc) to 11.5.9 (inc)
ibm	db2	From 11.5.0 (inc) to 11.5.9 (inc)
ibm	db2	From 11.5.0 (inc) to 11.5.9 (inc)
ibm	db2	From 12.1.0 (inc) to 12.1.4 (inc)
ibm	db2	From 12.1.0 (inc) to 12.1.4 (inc)
ibm	db2	From 12.1.0 (inc) to 12.1.4 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
CWE-1284	The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.

Attack-Flow Graph

Executive Summary

This vulnerability affects IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.4 on Linux, UNIX, and Windows platforms, including Db2 Connect Server. It allows an authenticated user to cause a denial of service by exploiting improper neutralization of special elements in the data query logic.

Impact Analysis

The vulnerability can lead to a denial of service condition, meaning that an authenticated user could disrupt the normal operation of the IBM Db2 database system, potentially causing downtime or unavailability of database services.

Compliance Impact

The provided information does not specify how this vulnerability impacts compliance with common standards and regulations such as GDPR or HIPAA.

Detection Guidance

IBM does not disclose replication steps or exploit methods to prevent misuse of the vulnerability information.

No specific detection commands or methods are provided to identify this vulnerability on your network or system.

Mitigation Strategies

To mitigate this vulnerability, customers are advised to download and install the interim fixes released by IBM for affected versions.

Apply the special builds for Db2 versions 11.5.9 and 12.1.4 available from IBM Fix Central.

No official workarounds are provided to avoid exposing details that could aid potential attackers.

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