CVE-2024-26186Network attack vector

Authenticated code execution via Native Scoring use-after-free

Published Sep 10, 2024 · Updated Aug 10, 2026

Use-after-free in Microsoft SQL Server 2017, 2019, and 2022 allows remote authenticated users to execute code through Native Scoring. Microsoft identifies Native Scoring and CWE-416 but has not disclosed the affected function, object lifetime error, or crafted input that triggers reuse of freed memory. Exploitation requires low-privileged network access to a SQL Server instance, and successful code execution can compromise data and interrupt the database service.

CVSS severity8.8
High
EPSS probability1.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Microsoft SQL Server 2017, 2019, and 2022 allows remote authenticated users to execute code through Native Scoring. Microsoft identifies Native Scoring and CWE-416 but has not disclosed the affected function, object lifetime error, or crafted input that triggers reuse of freed memory. Exploitation requires low-privileged network access to a SQL Server instance, and successful code execution can compromise data and interrupt the database service.

The record

CVE
CVE-2024-26186
Published
Sep 10, 2024
Updated
Aug 10, 2026
Vendor
Microsoft
Product
Microsoft SQL Server 2022
Classifications
CWE-416, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=16.0.0 <16.0.1125.1
  2. Affected versionversion=16.0.0 <16.0.4140.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft SQL Server 2022version=16.0.0 <16.0.1125.1; version=16.0.0 <16.0.4140.3
Microsoft · Microsoft SQL Server 2019version=15.0.0 <15.0.2120.1; version=15.0.0 <15.0.4390.2
Microsoft · Microsoft SQL Server 2017version=14.0.0 <14.0.2060.1; version=14.0.0 <14.0.3475.1

Published CVSS scores

8.8MicrosoftCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.7MicrosoftCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1210Exploitation of Remote Services

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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