CVE-2019-4523

Name: CVE-2019-4523
Creator: NVD / NIST
Published: 2019-10-22T15:15:10.537+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2019-4523 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. IBM DB2 High Performance Unload load for LUW 6.1 and 6.5 is vulnerable to a buffer overflow, caused by improper bounds checking which could allow a local attacker to execute arbitrary code on the system with root privileges. IBM X-Force ID: 165481.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

IBM DB2 High Performance Unload load for LUW 6.1 and 6.5 is vulnerable to a buffer overflow, caused by improper bounds checking which could allow a local attacker to execute arbitrary code on the system with root privileges. IBM X-Force ID: 165481.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.44%

35.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Ibm	Db2 High Performance Unload Load	6.1
Ibm	Db2 High Performance Unload Load	6.5

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/165481VDB Entry, Vendor Advisory
https://supportcontent.ibm.com/support/pages/node/1073236Permissions Required
https://exchange.xforce.ibmcloud.com/vulnerabilities/165481VDB Entry, Vendor Advisory
https://supportcontent.ibm.com/support/pages/node/1073236Permissions Required

Timeline

Published: Oct 22, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-4523?

How severe is CVE-2019-4523?

CVE-2019-4523 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2019-4523?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-4523?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST