CVE-2026-21262 — Improper Access Control in Microsoft SQL Server 2016 Service Pack 3

CWE-284 — Improper Access Control10 documents9 sources
Severity
8.8HIGHNVD
EPSS
0.2%
top 64.23%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
13
Microsoft SQL Server 2016 Service Pack 3Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature PackMicrosoft SQL Server 2017+10 more
Timeline
PublishedMar 10
Latest updateMar 11

Description

Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages9 packages

▶CVEListV5microsoft/microsoft_sql_server_201714.0.0 — 14.0.3520.4+1
▶CVEListV5microsoft/microsoft_sql_server_201915.0.0.0 — 15.0.4460.4+1
▶CVEListV5microsoft/microsoft_sql_server_202216.0.0 — 16.0.1170.5
▶CVEListV5microsoft/microsoft_sql_server_202517.0.0.0 — 17.0.4020.2
▶CVEListV5microsoft/microsoft_sql_server_2016_service_pack_313.0.0 — 13.0.6480.4

🔴Vulnerability Details

3
CVEList
SQL Server Elevation of Privilege Vulnerability↗2026-03-10
▶
GHSA
GHSA-wmrr-4347-6m3q: Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network↗2026-03-10
▶
VulnCheck
Microsoft sql_server_2016 Improper Access Control↗2026
▶

📋Vendor Advisories

1
Microsoft
SQL Server Elevation of Privilege Vulnerability↗2026-03-10
▶

🕵️Threat Intelligence

3
Krebs
Microsoft Patch Tuesday, March 2026 Edition↗2026-03-11
▶
Tenable
March 2026 Microsoft Patch Tuesday | Tenable®↗2026-03-10
▶
Wiz
CVE-2026-21262 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2026-21262 — Improper Access Control in Microsoft | cvebase