CVE-2020-4739

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-11-20 · updated 2026-06-17
Weakness: CWE-426

Description

IBM DB2 Accessories Suite for Linux, UNIX, and Windows, DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 could allow a local authenticated attacker to execute arbitrary code on the system, caused by DLL search order hijacking vulnerability in Microsoft Windows client. By placing a specially crafted file in a compromised folder, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 188149.

Affected products

IBM Db2 for Linux, UNIX and Windows: from 11.5 before 11.5.5.0; 9.7.0.0, 10.1.0.0, 10.5.0.0, 11.1.0.0 — fixed in 11.5.5.0

How to fix

Upgrade to a fixed version: IBM Db2 for Linux, UNIX and Windows 11.5.5.0. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2020-4739 or the next vulnerability affects your stack