How severe is CVE-2019-4523?

CVE-2019-4523 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-4523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-4523?

CVE-2019-4523 primarily affects Ibm Db2 High Performance Unload Load. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-4523?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-4523 published?

CVE-2019-4523 was published on 2019-10-22 and last updated on 2026-06-17.

CVE-2019-4523

CVE-2019-4523 is a high-severity vulnerability in Ibm Db2 High Performance Unload Load with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Ibm Db2 High Performance Unload Load
Published: 2019-10-22
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-4523?: 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.
How severe is CVE-2019-4523?: CVE-2019-4523 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-4523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-4523?: CVE-2019-4523 primarily affects Ibm Db2 High Performance Unload Load. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-4523?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-4523 published?: CVE-2019-4523 was published on 2019-10-22 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:db2_high_performance_unload_load:6.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:db2_high_performance_unload_load:6.5:*:*:*:*:*:*:*

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