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CVE-2026-67638

HighCVSS 8.8/10Last modified Sep 15, 2026

Description

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

Vendor	Product	Versions
Microsoft	Microsoft SQL Server 2025 (CU8)	>= 17.0.0.0, < 17.0.4085.5
Microsoft	Microsoft SQL Server 2025 for x64-based Systems (GDR)	>= 17.0.1050.2, < 17.0.1135.8

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67638Vendor Advisory, Patch

Timeline

Published: Sep 8, 2026
Last modified: Sep 15, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-676398.8Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.CVE-2026-67646.5Incorrect boundary conditions in the DOM: Device Interfaces component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thun CVE-2026-676416.5Integer overflow or wraparound in SQL Server allows an authorized attacker to deny service over a network.CVE-2026-676428.8Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.CVE-2026-676439.8Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.CVE-2026-676456.5Out-of-bounds read in SQL Server allows an authorized attacker to disclose information over a network.CVE-2026-676486.5Use of uninitialized resource in SQL Server allows an authorized attacker to disclose information over a network.CVE-2026-67655.3Information disclosure in the Form Autofill component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and CVE-2026-67667.5Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbir CVE-2026-67675.3Other issue in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderb CVE-2026-676734.6A stack-based buffer overflow vulnerability exists in the cmd_edl function of OreSat Firmware v1.0. The vulnerability is triggered when proc CVE-2026-676789.8File Upload vulnerability in RainyGao-Hithub DocSys v.2.02.80 allows a remote attacker to execute arbitrary code

CVE-2026-67638: High severity, CVSS 8.8 | Vulnix