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CVE-2023-28523

22
FAUCET Score

CVE-2023-28523 is a heap buffer overflow vulnerability in IBM Informix Dynamic Server versions 12.10 and 14.10, specifically within the onsmsync component, due to improper bounds checking. This vulnerability carries a high CVSS score of 7.8, indicating that a local attacker with low privileges could execute arbitrary code, leading to high impact on confidentiality, integrity, and availability. Despite its severity, there is currently no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
12.10CPE matchmatch criteria
cpe:2.3:a:ibm:informix_dynamic_server:12.10:-:*:*:-:*:*:*
14.10CPE matchmatch criteria
cpe:2.3:a:ibm:informix_dynamic_server:14.10:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:ibm:informix_dynamic_server_on_cloud_pak_for_data:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.4HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.5
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
20.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 57th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/250753
VDB EntryVendor Advisory
ibm.com / support/pages/node/7070188
Vendor Advisory