CVE-2026-88083ImportantRCENetwork
Microsoft SQL Server Remote Code Execution Vulnerability
Assessment
Stack-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
- Severity
- Important
- CVSS base score
- 7.5CVSS:3.1/
AV:N/ AC:H/ PR:N/ UI:R/ S:U/ C:H/ I:H/ A:H/ E:U/ RL:O/ RC:C - Impact
- Remote Code Execution
- 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-121: Stack-based Buffer Overflow
- 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
- NonePR:N
- User interaction
- RequiredUI:R
- Scope
- UnchangedS:U
- Confidentiality
- HighC:H
- Integrity
- HighI:H
- Availability
- HighA:H
Updates that fix it
4 KBs| KB | Type | Restart | Applies to | Other CVEs |
|---|---|---|---|---|
| KB5126934 | Security Update | Required | Microsoft SQL Server 2022 for x64-based Systems (CU27) | All CVEs in KB5126934 |
| KB5126967 | Security Update | Required | Microsoft SQL Server 2025 for x64-based Systems (CU9) | All CVEs in KB5126967 |
| KB5128492 | Security Update | Required | Microsoft SQL Server 2025 for x64-based Systems (GDR) | All CVEs in KB5128492 |
| KB5128493 | Security Update | Required | Microsoft SQL Server 2022 for x64-based Systems (GDR) | All CVEs in KB5128493 |
Affected products
SQL Server6 affected products
- Microsoft SQL Server 2022 for x64-based Systems (CU 26)
- Microsoft SQL Server 2022 for x64-based Systems (CU27)
- Microsoft SQL Server 2022 for x64-based Systems (GDR)
- Microsoft SQL Server 2025 for x64-based Systems (CU8)
- Microsoft SQL Server 2025 for x64-based Systems (CU9)
- Microsoft SQL Server 2025 for x64-based Systems (GDR)
What changed
First observed 14 Oct 2026No field changes in the recorded history.
Cite this recorded revision to keep the same title, summary, facts and links when the page changes.
A day selects the latest observation by the end of that UTC day; today's selection can change until midnight. History starts when this installation records it.