CVE-2026-21262 (GCVE-0-2026-21262)

Vulnerability from cvelistv5 – Published: 2026-03-10 17:04 – Updated: 2026-04-14 16:35
VLAI KEVintel KEV
Title
SQL Server Elevation of Privilege Vulnerability
Summary
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-284 - Improper Access Control
Assigner
References
Impacted products
Date Public
2026-03-10 14:00
KEVintel KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 6111fedd-2036-4a33-a09d-226fef3e7af9

Vulnerability ID: CVE-2026-21262

Status: Confirmed

Status Updated: 2026-04-19 13:46 UTC

Exploited: Yes

Timestamps
First Seen: 2026-04-19
Asserted: 2026-04-19
Scope
Notes: KEVIntel entry: SQL Server Elevation of Privilege Vulnerability | Affected: Microsoft / Microsoft SQL Server 2016 Service Pack 3 (GDR), Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack, Microsoft SQL Server 2017 (CU 31), Microsoft SQL Server 2017 (GDR), Microsoft SQL Server 2019 (CU 32), Microsoft SQL Server 2019 (GDR), Microsoft SQL Server 2022 (GDR), Microsoft SQL Server 2022 for x64-based Systems (CU 23), Microsoft SQL Server 2025 (CU 2), Microsoft SQL Server 2025 for x64-based Systems (GDR) | CVSS: 8.8 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title SQL Server Elevation of Privilege Vulnerability
Vendor Microsoft
Product Microsoft SQL Server 2016 Service Pack 3 (GDR), Microsoft SQL Server 2016 Service Pack 3 Azure Connect Feature Pack, Microsoft SQL Server 2017 (CU 31), Microsoft SQL Server 2017 (GDR), Microsoft SQL Server 2019 (CU 32), Microsoft SQL Server 2019 (GDR), Microsoft SQL Server 2022 (GDR), Microsoft SQL Server 2022 for x64-based Systems (CU 23), Microsoft SQL Server 2025 (CU 2), Microsoft SQL Server 2025 for x64-based Systems (GDR)
Added Date 2026-04-19T13:46:00.775Z
Cvss Score 8.8
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-19 12:45 UTC | Updated: 2026-06-19 12:45 UTC
Show details on NVD website
To clipboard 

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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.