Description
Allocation of resources without limits or throttling in SQL Server allows an authorized attacker to deny service over a network.
Published: 2026-10-13
Score: 5.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Patch Now
AI Analysis

Impact

Microsoft SQL Server allocates resources without limits or throttling, allowing an authorized attacker to flood the server with resource-intensive operations that exhaust memory or CPU, ultimately causing the database process to become unresponsive. The resulting denial of service disrupts availability for applications that depend on the database, and there is no evidence of direct compromise to confidentiality or integrity; this conclusion is inferred from the description.

Affected Systems

The vulnerability affects Microsoft SQL Server 2019 (GDR), Microsoft SQL Server 2019 for x64‑based Systems (CU32), and Microsoft SQL Server 2025 (CU8).

Risk and Exploitability

The CVSS score of 5.3 rates the vulnerability as moderate, and the EPSS score of less than 1% indicates a low likelihood of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog, suggesting it has not yet had widespread or publicly known exploitation. Based on the description, the likely attack vector is a local or network attacker with authorized access who can send specially crafted queries; this inference is drawn because the exploit requires credentialed access to force the server to allocate resources.

Generated by OpenCVE AI on October 16, 2026 at 03:34 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the Microsoft SQL Server security update that contains the fix for CVE‑2026‑88084.
  • If a patch is not yet available, configure server resource limits to throttle excessive connections or long‑running queries.
  • Continuously monitor CPU, memory, and connection metrics for sudden spikes and set alerts to detect potential denial‑of‑service attempts.

Generated by OpenCVE AI on October 16, 2026 at 03:34 UTC.

Tracking

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Advisories

No advisories yet.

History

Fri, 30 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*

Wed, 14 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
Description Allocation of resources without limits or throttling in SQL Server allows an authorized attacker to deny service over a network.
Title Microsoft SQL Server Denial of Service Vulnerability
First Time appeared Microsoft
Microsoft microsoft Sql Server 2019 For X64-based Systems \(cu32\)
Microsoft sql Server 2019
Microsoft sql Server 2025
Weaknesses CWE-770
CPEs cpe:2.3:a:microsoft:microsoft_sql_server_2019_for_x64-based_systems_\(cu32\):*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*
Vendors & Products Microsoft
Microsoft microsoft Sql Server 2019 For X64-based Systems \(cu32\)
Microsoft sql Server 2019
Microsoft sql Server 2025
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Microsoft Sql Server 2019 For X64-based Systems \(cu32\) Sql Server 2019 Sql Server 2025
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-31T18:10:29.639Z

Reserved: 2026-09-09T21:47:30.203Z

Link: CVE-2026-88084

cve-icon Vulnrichment

Updated: 2026-10-13T22:04:23.487Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-13T21:19:42.933

Modified: 2026-10-30T20:17:23.300

Link: CVE-2026-88084

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T20:30:17Z

Weaknesses
  • CWE-770

    Allocation of Resources Without Limits or Throttling