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CVE-2026-18166— IBM® Db2® is vulnerable to arbitrary library loading via the CREATE WRAPPER command, allowing a privileged database user to read sensitive files from the host filesystem

Quick assessment

Affected
IBM Db2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IBM Db2 11.5.0 至 11.5.9 以及 12.1.0 至 12.1.5 版本（适用于 Linux、UNIX 和 Windows 操作系统，包括 DB2 Connect Server）存在一个安全漏洞。攻击者若为远程认证用户，可通过使用 CREATE WRAPPER 命令时因授权不当（improper authorization）而获取敏感信息。

CVSS 7.7 · High EPSS 0.42% · P35

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 2

VendorProduct Version RangeStatus
IBM Db2 11.5.0≤ 11.5.9 affected
12.1.0≤ 12.1.5 affected
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I. Basic Information for CVE-2026-18166

Vulnerability Information
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Vulnerability Title
IBM® Db2® is vulnerable to arbitrary library loading via the CREATE WRAPPER command, allowing a privileged database user to read sensitive files from the host filesystem
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow a remote authenticated attacker to obtain sensitive information due to improper authorization when using the CREATE WRAPPER command.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM Db2 11.5.0 ~ 11.5.9 cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:aix:*:*

II. Public POCs for CVE-2026-18166

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III. Intelligence Information for CVE-2026-18166

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Vendor Advisories for CVE-2026-18166 (1)

Same Patch Batch · IBM · 2026-10-12 · 61 CVEs total

CVE-2026-96012 9.9 CRITICAL IBM Db2 Mirror for i Privilege Escalation
CVE-2026-96119 9.9 CRITICAL IBM i is Affected By An Improper Control of Code Generation Vulnerability in HTTP Server A
CVE-2026-90920 9.8 CRITICAL Maximo AI Service Code Injection
CVE-2026-82101 9.6 CRITICAL DataStage on Cloud Pak for Data Path Traversal
CVE-2026-82103 9.6 CRITICAL DataStage on Cloud Pak for Data Information Disclosure
CVE-2026-82110 9.6 CRITICAL DataStage on Cloud Pak for Data Path Traversal
CVE-2026-105465 8.8 HIGH IBM® Db2® is vulnerable to privilege escalation when db2ssh is enabled with the db2 instan
CVE-2026-19620 8.8 HIGH IBM Planning Analytics Local is affected by security vulnerabilities
CVE-2026-19622 8.8 HIGH IBM Planning Analytics Local is affected by security vulnerabilities
CVE-2026-102627 8.8 HIGH Security Vulnerability identified in IBM TRIRIGA - Zip Slip
CVE-2026-82096 8.8 HIGH DataStage on Cloud Pak for Data Command Injection
CVE-2026-82108 8.8 HIGH DataStage on Cloud Pak for Data Code Injection
CVE-2026-105464 8.8 HIGH IBM® Db2® is vulnerable to a local attacker with DBADM authorization gaining elevated priv
CVE-2026-18529 8.7 HIGH IBM Maximo Application Suite - Location Service for Esri Component Code Execution
CVE-2026-18537 8.7 HIGH IBM Maximo Application Suite - Location Service for Esri Component Code Execution
CVE-2026-93886 8.3 HIGH IBM i is Affected By An Improper Neutralization of Input Vulnerability in HTTP Server Admi
CVE-2026-96262 8.2 HIGH IBM Power Systems Firmware Buffer Overflow
CVE-2026-19627 8.2 HIGH IBM Planning Analytics Local is affected by security vulnerabilities
CVE-2026-96263 8.2 HIGH IBM Power Systems Firmware Buffer Overflow
CVE-2026-96264 8.2 HIGH IBM Power Systems Firmware Buffer Overflow

Showing top 20 of 61 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Db2
Same vendor: IBM
Same weakness: CWE-284

V. Comments for CVE-2026-18166

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