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CVE-2026-67368 Microsoft CVE debrief

CVE-2026-67368 is a high-severity vulnerability in Microsoft SQL Server that allows an authorized attacker to elevate privileges over a network by improperly resolving links before file access. This issue, known as link following, can be exploited by an attacker with local privileges to gain elevated access. Microsoft has released a patch for this vulnerability, which is detailed in their security update guide.

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
2026-09-15
Advisory published
2026-09-08
Advisory updated
2026-09-15

Who should care

SQL Server administrators, security teams, and IT professionals responsible for patching and vulnerability management should be aware of this vulnerability and apply patches immediately to prevent potential privilege escalation attacks.

Why it matters

CVE-2026-67368 is a high-severity vulnerability in Microsoft SQL Server that requires immediate attention from SQL Server administrators and security teams to prevent potential privilege escalation attacks.

  • Potential privilege escalation for attackers with local access
  • Increased risk for SQL Server instances exposed to untrusted networks or users
  • Need for immediate patching to prevent exploitation

Technical summary

CVE-2026-67368 is a high-severity vulnerability in Microsoft SQL Server that allows an authorized attacker to elevate privileges over a network by improperly resolving links before file access. This issue, known as link following, can be exploited by an attacker with local privileges to gain elevated access. The vulnerability has a CVSS score of 8.8 and affects various versions of SQL Server, including SQL Server 2017, 2019, 2022, and 2025.

Defensive priority

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

Recommended defensive actions

  • Apply patches from Microsoft's security update guide
  • Restrict network access to SQL Server instances
  • Monitor for suspicious activity on SQL Server instances

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 8.8 and affected SQL Server versions. Microsoft's security update guide offers patches for this issue.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-67368 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-67368

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

  • CVE-2026-67368 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-67368

    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.