CVE-2026-70189Hinoki check available

Privileged local code execution via heap overflow

Published Oct 13, 2026 · Updated Oct 13, 2026

Heap-based buffer overflow in Microsoft SQL Server allows local users with high privileges to execute code via an undisclosed trigger. Microsoft has not disclosed the affected component or the input operation that overruns the heap buffer. The flaw affects SQL Server 2017, 2019, 2022, and 2025; exploitation requires existing authorization rather than unauthenticated network access.

CVSS severity6.7
Medium
EPSS probability0.26%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Heap-based buffer overflow in Microsoft SQL Server allows local users with high privileges to execute code via an undisclosed trigger. Microsoft has not disclosed the affected component or the input operation that overruns the heap buffer. The flaw affects SQL Server 2017, 2019, 2022, and 2025; exploitation requires existing authorization rather than unauthenticated network access.

The record

CVE
CVE-2026-70189
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
Microsoft Corporation
Product
Microsoft SQL Server 2022
Classifications
CWE-122
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 13, 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 <16.0.1210.3
  2. Affected versionversion=16.0.4003.1 <16.0.4305.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Microsoft Corporation · Microsoft SQL Server 2022version=16.0.0 <16.0.1210.3; version=16.0.4003.1 <16.0.4305.5
Microsoft Corporation · Microsoft SQL Server 2019version=15.0.0 <15.0.2200.2; version=15.0.4003.23 <15.0.4500.2
Microsoft Corporation · Microsoft SQL Server 2017version=14.0.0 <14.0.2140.2; version=14.0.3006.16 <14.0.3560.2
Microsoft Corporation · Microsoft SQL Server 2025version=-; version=17.0.1050.2 <17.0.1145.4; version=17.0.4006.2 <17.0.5015.4

Published CVSS scores

6.7MicrosoftCVSS:3.1/AV:L/AC:L/PR:H/UI:N/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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