CVE-2026-68786
Analyzed Analyzed - Analysis Complete

Heap-based Buffer Overflow in SQL Server

Vulnerability report for CVE-2026-68786, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-08

Last updated on: 2026-09-15

Assigner: Microsoft Corporation

Description

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-08
Last Modified
2026-09-15
Generated
2026-09-29
AI Q&A
2026-09-10
EPSS Evaluated
2026-09-27
NVD

Affected Vendors & Products

Showing 8 associated CPEs
Vendor Product Version / Range
microsoft sql_server_2022 to 16.0.1200.5 (exc)
microsoft sql_server_2022 From 16.0.4003.1 (inc) to 16.0.4275.2 (exc)
microsoft sql_server_2017 to 14.0.2130.4 (exc)
microsoft sql_server_2017 From 14.0.3006.16 (inc) to 14.0.3550.4 (exc)
microsoft sql_server_2019 to 15.0.2190.7 (exc)
microsoft sql_server_2019 From 15.0.4003.23 (inc) to 15.0.4490.9 (exc)
microsoft sql_server_2025 to 17.0.1135.8 (exc)
microsoft sql_server_2025 From 17.0.4006.2 (inc) to 17.0.4085.5 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

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Executive Summary

This is a heap-based buffer overflow vulnerability in Microsoft SQL Server. It allows an authorized attacker to execute arbitrary code remotely over a network by exploiting a flaw in memory handling.

Impact Analysis

An attacker could gain control of the SQL Server process, potentially leading to data theft, unauthorized database access, or further network compromise. The high CVSS score indicates significant risk.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Organizations must address it to maintain compliance.

Mitigation Strategies

Apply the latest security update from Microsoft for SQL Server as soon as possible to patch the heap-based buffer overflow vulnerability.

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EPSS Chart