CVE-2023-28523

Name: CVE-2023-28523
Creator: NVD / NIST
Published: 2023-12-09T03:15:06.92+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2023-28523 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. IBM Informix Dynamic Server 12.10 and 14.10 onsmsync is vulnerable to a heap buffer overflow, caused by improper bounds checking which could allow an attacker to execute arbitrary code. IBM X-Force ID: 250753. . EPSS estimates a 0.29% chance of exploitation in the next 30 days.

Description

IBM Informix Dynamic Server 12.10 and 14.10 onsmsync is vulnerable to a heap buffer overflow, caused by improper bounds checking which could allow an attacker to execute arbitrary code. IBM X-Force ID: 250753.

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

0.29%

20.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ibm	Informix Dynamic Server	12.10
Ibm	Informix Dynamic Server	14.10
Ibm	Informix Dynamic Server On Cloud Pak For Data	All versions

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/250753VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/7070188Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/250753VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/7070188Vendor Advisory

Timeline

Published: Dec 9, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-28523?

How severe is CVE-2023-28523?

CVE-2023-28523 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2023-28523?

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-2023-28523?

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

Scan your code now

Source: NVD / NIST