CVE-2026-88084ImportantDoSNetwork
Microsoft SQL Server Denial of Service Vulnerability
Assessment
Allocation of resources without limits or throttling in SQL Server allows an authorized attacker to deny service over a network.
- Severity
- Important
- CVSS base score
- 5.3CVSS:3.1/
AV:N/ AC:H/ PR:L/ UI:N/ S:U/ C:N/ I:N/ A:H/ E:U/ RL:O/ RC:C - Impact
- Denial of Service
- EPSS, next 30 days
- Not scored yet
- Public exploit code
- No Nuclei template lists it
- Exploitability
- Exploitation Unlikely
- Publicly disclosed
- No
- Customer action
- Required: apply the update
- Component
- SQL Server
- Weakness
- CWE-770: Allocation of Resources Without Limits or Throttling
- Issued by
- Microsoft
- Published
- 13 Oct 2026 · October 2026
- Last revised
- 13 Oct 2026
CVSS 3.1 base metricsRed raises the risk · green lowers it
- Attack vector
- NetworkAV:N
- Attack complexity
- HighAC:H
- Privileges required
- LowPR:L
- User interaction
- NoneUI:N
- Scope
- UnchangedS:U
- Confidentiality
- NoneC:N
- Integrity
- NoneI:N
- Availability
- HighA:H
Updates that fix it
2 KBs| KB | Type | Restart | Applies to | Other CVEs |
|---|---|---|---|---|
| KB5128494 | Security Update | Required | Microsoft SQL Server 2019 for x64-based Systems (CU32) | All CVEs in KB5128494 |
| KB5128495 | Security Update | Required | Microsoft SQL Server 2019 for x64-based Systems (GDR) | All CVEs in KB5128495 |
Affected products
SQL ServerWhat changed
First observed 14 Oct 2026No field changes in the recorded history.
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