Security Updates for Microsoft SQL Server (March 2026)

high Nessus Plugin ID 301981

Synopsis

The Microsoft SQL Server installation on the remote host is missing a security update.

Description

The Microsoft SQL Server installation on the remote host is missing a security update. It is, therefore, affected by the following vulnerabilities:

- A privilege escalation vulnerability (CVE-2026-21262, CVE-2026-26115, CVE-2026-26116)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Microsoft has released security updates for Microsoft SQL Server.

See Also

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21262

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26115

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26116

Plugin Details

Severity: High

ID: 301981

File Name: smb_nt_ms26_mar_mssql.nasl

Version: 1.1

Type: local

Agent: windows

Published: 3/12/2026

Updated: 3/12/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-26116

CVSS v3

Risk Factor: High

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/a:microsoft:sql_server

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Patch Publication Date: 3/10/2026

Vulnerability Publication Date: 3/10/2026

Reference Information

CVE: CVE-2026-21262, CVE-2026-26115, CVE-2026-26116

MSFT: MS26-5077464, MS26-5077465, MS26-5077466, MS26-5077468, MS26-5077469, MS26-5077470, MS26-5077471, MS26-5077472, MS26-5077473, MS26-5077474

MSKB: 5077464, 5077465, 5077466, 5077468, 5077469, 5077470, 5077471, 5077472, 5077473, 5077474