CVE-2026-77485
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Use After Free in Microsoft SQL Server

Vulnerability report for CVE-2026-77485, 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

Use after free in SQL Server allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-09-08
Last Modified
2026-09-15
Generated
2026-09-29
AI Q&A
2026-09-09
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-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

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Executive Summary

This is a use-after-free vulnerability in Microsoft SQL Server. It allows an authorized attacker to elevate their privileges locally by exploiting a memory management flaw where a program continues to use memory after it has been freed.

Impact Analysis

An attacker with local access could exploit this to gain higher privileges on the system running SQL Server. This could lead to unauthorized data access, modification, or system control if combined with other vulnerabilities.

Mitigation Strategies

Apply the latest security updates from Microsoft for SQL Server as soon as possible to patch the use-after-free vulnerability.

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EPSS Chart