CVE-2026-88086

Awaiting Analysis Awaiting Analysis - Queue

Out-of-Bounds Read in Microsoft SQL Server

Publication date: 2026-10-13

Last updated on: 2026-10-15

Assigner: Microsoft Corporation

Description

Out-of-bounds read in SQL Server allows an unauthorized attacker to disclose information over an adjacent network.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-13

Last Modified

2026-10-15

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-88086

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Microsoft	SQL Server 2019 (GDR) 15.0.0
Microsoft	Microsoft	SQL Server 2019 for x64-based Systems (CU32) 15.0.4003.23
Microsoft	Microsoft	SQL Server 2022 (GDR) 16.0.0
Microsoft	Microsoft	SQL Server 2022 for x64-based Systems (CU27) 16.0.4003.1
Microsoft	Microsoft	SQL Server 2025 (CU8) *
Microsoft	Microsoft	SQL Server 2025 for x64-based Systems (CU9) 17.0.4006.2
Microsoft	Microsoft	SQL Server 2025 for x64-based Systems (GDR) 17.0.1050.2

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds read vulnerability in Microsoft SQL Server. It allows an unauthorized attacker to read memory outside the intended buffer, potentially exposing sensitive data. The attack occurs over an adjacent network, meaning the attacker must have network access to the vulnerable system.

Impact Analysis

An attacker could exploit this to disclose confidential information stored in memory, such as credentials, personal data, or other sensitive details. This could lead to further attacks like privilege escalation or data breaches.

Compliance Impact

This vulnerability could result in unauthorized data exposure, violating GDPR's data protection requirements or HIPAA's safeguards for protected health information. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Apply the latest cumulative updates for affected SQL Server versions to patch the out-of-bounds read vulnerability. Monitor Microsoft's security advisories for specific update releases.

Hi! I’m here to help you understand CVE-2026-88086. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70