CVE-2023-23375

User-assisted code execution via invalid server metadata

Published Apr 11, 2023 · Updated Jun 2, 2026

Improper input validation in affected Microsoft SQL Server ODBC and OLE DB drivers allows attackers to execute code after user interaction. The drivers fail to safely validate metadata received from an untrusted SQL Server, but Microsoft has not identified the affected parser or exact malformed field. Exploitation requires a user to direct a driver connection to an untrusted server; successful code runs in the calling application's security context.

CVSS severity7.8
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in affected Microsoft SQL Server ODBC and OLE DB drivers allows attackers to execute code after user interaction. The drivers fail to safely validate metadata received from an untrusted SQL Server, but Microsoft has not identified the affected parser or exact malformed field. Exploitation requires a user to direct a driver connection to an untrusted server; successful code runs in the calling application's security context.

The record

CVE
CVE-2023-23375
Published
Apr 11, 2023
Updated
Jun 2, 2026
Vendor
Microsoft
Product
Microsoft ODBC Driver 18 for SQL Server
Classifications
CWE-20
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=18.0.0.0 <18.2.1.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft ODBC Driver 18 for SQL Serverversion=18.0.0.0 <18.2.1.1
Microsoft · Microsoft OLE DB Driver 19 for SQL Serverversion=19.0.0 <19.3.0
Microsoft · Microsoft ODBC Driver 17 for SQL Serverversion=17.0.0.0 <17.10.3.1
Microsoft · Microsoft OLE DB Driver 18 for SQL Serverversion=18.0.0 <18.6.5

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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