Vulnerability · Published Sep 8, 2026 · Assigned by microsoft
CVE-2026-77482Microsoft SQL Server Remote Code Execution Vulnerability
High 8.8
In plain English
A high-severity heap buffer overflow in Microsoft SQL Server 2017 (CU 31) from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.8%top 42.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (CU 31) | 14.0.0 – before 14.0.3550.4 |
| Microsoft | Microsoft SQL Server 2017 (GDR) | 14.0.0 – before 14.0.2130.4 |
| Microsoft | Microsoft SQL Server 2019 (CU 32) | 15.0.0.0 – before 15.0.4490.9 |
| Microsoft | Microsoft SQL Server 2019 (GDR) | 15.0.0 – before 15.0.2190.7 |
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Microsoft SQL Server Remote Code Execution Vulnerability vendor-advisory, patch