Vulnerability Intelligence Report
Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2026-67643
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:0.97%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-122 ↗CWE-122: Heap-based Buffer Overflow
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Microsoft SQL Server 2022 (CU 26) | 16.0.0.0 < 16.0.4275.2 (affected) |
| Microsoft | Microsoft SQL Server 2022 (GDR) | 16.0.0 < 16.0.1200.5 (affected) |
| Microsoft | Microsoft SQL Server 2025 (CU8) | 17.0.0.0 < 17.0.4085.5 (affected) |
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) | 17.0.1050.2 < 17.0.1135.8 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.974%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2026-07-29T22:49:19 |
| Published | 2026-09-08T17:13:49 |
| Patch Date | 2026-09-08 |
| Last Updated | 2026-09-24T22:23:28 |
Community Chatter & Buzz