What is the CVSS score of CVE-2026-1718?

CVE-2026-1718 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of IBM Db2 are affected by CVE-2026-1718?

IBM Db2 versions 11.5.0 through 12.1.4 are vulnerable to denial-of-service attacks that allow authenticated database users to crash the database engine when autonomous transactions are enabled,…

IBM Db2 CVE-2026-1718

EUVD-2026-32266 HIGH

Allocation of Resources Without Limits or Throttling (CWE-770)

2026-05-27 psirt@us.ibm.com

GHSA-5xr2-xxr9-mq26

Denial Of Service IBM

7.1

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

May 27, 2026 - 20:58 vuln.today

DescriptionNVD

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service with a specially crafted query when autonomous transactions are enabled.

AnalysisAI

Denial of service in IBM Db2 11.5.0-11.5.9 and 12.1.0-12.1.4 allows an authenticated database user to crash or exhaust the database engine by submitting a specially crafted query when the autonomous transactions feature is enabled. The flaw (CWE-770, uncontrolled resource allocation) carries a CVSS 7.1 with high availability impact but no confidentiality or integrity loss. …

RemediationAI

Within 24 hours: Inventory all IBM Db2 instances running versions 11.5.0-11.5.9 or 12.1.0-12.1.4; identify which have autonomous transactions enabled and audit database user account privileges. Within 7 days: Implement least-privilege database access controls, disable autonomous transactions if operationally feasible, and restrict database network access to authorized application and administrative systems only. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-1718 vulnerability details – vuln.today

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