CVE-2023-28523

HIGHNVD 8.48.4—

8.4

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.

CVSS v3: 8.4
EG Score: 8.4(medium)
EPSS: 11.7%
KEV: Not listed

Published

December 9, 2023

Last Modified

November 21, 2024

References (4)

psirt@ushttps://exchange.xforce.ibmcloud.com/vulnerabilities/250753
psirt@ushttps://www.ibm.com/support/pages/node/7070188
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/250753
af854a3a-2127-422b-91ae-364da2661108https://www.ibm.com/support/pages/node/7070188

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
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2026-05-24 12:29 UTCEG score recompute

Frequently asked(5)

What is CVE-2023-28523?

CVE-2023-28523 is a high vulnerability published on December 9, 2023. 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.

When was CVE-2023-28523 disclosed?

CVE-2023-28523 was first published in the National Vulnerability Database on December 9, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-28523 actively exploited?

CVE-2023-28523 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-28523?

CVE-2023-28523 has a CVSS v3 base score of 8.4 (NVD).

How do I remediate CVE-2023-28523?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-28523, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-28523

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-28523?

🔗 Related CVEs(same CWE)

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References (4)

Frequently asked(5)

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