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CVE-2026-67370 Microsoft CVE debrief

CVE-2026-67370 is a SQL injection vulnerability in Microsoft SQL Server that allows an authorized attacker to elevate privileges over a network. The vulnerability has a CVSS score of 8.8 and is considered HIGH severity. Microsoft has released a patch for this vulnerability. SQL Server administrators and security teams should assess exposure and apply patches immediately. The vulnerability is caused by improper neutralization of special elements used in an SQL command. Affected versions of SQL Server include 2017, 2019, 2022, and 2025.

Vendor
Microsoft
Product
Microsoft SQL Server 2017 (CU 31)
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-16
Advisory published
2026-09-08
Advisory updated
2026-09-16

Who should care

SQL Server administrators and security teams should assess exposure and apply patches immediately. The vulnerability allows an authorized attacker to elevate privileges over a network. SQL Server instances exposed to untrusted networks are at risk. Patching is required to prevent exploitation.

Why it matters

CVE-2026-67370 is a SQL injection vulnerability in Microsoft SQL Server that allows an authorized attacker to elevate privileges over a network. SQL Server administrators and security teams should assess exposure and apply patches immediately.

  • Privilege elevation requires verification from official sources.
  • SQL Server instances exposed to untrusted networks are at risk.
  • Patching is required to prevent exploitation.

Technical summary

The vulnerability is caused by improper neutralization of special elements used in an SQL command, allowing an authorized attacker to elevate privileges over a network. Affected versions of SQL Server include 2017, 2019, 2022, and 2025. SQL Server administrators and security teams should assess exposure and apply patches immediately. The vulnerability has a CVSS score of 8.8 and is considered HIGH severity.

Defensive priority

Apply patches immediately, especially for SQL Server instances exposed to untrusted networks.

Recommended defensive actions

  • Apply patches immediately, especially for SQL Server instances exposed to untrusted networks.
  • Review and update SQL Server configurations to limit exposure.
  • Monitor SQL Server logs for suspicious activity.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and affected versions of SQL Server. The vulnerability allows an authorized attacker to elevate privileges over a network. SQL Server administrators and security teams should assess exposure and apply patches immediately. The CVE record was published on 2026-09-08T18:18:20.817Z and has not been modified since then. The official CVE Program record and NVD detail page provide source-provided CVE

Sources and references

Verified primary and authoritative sources

  • CVE-2026-67370 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-67370

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-67370 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-67370

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.