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CVE-2026-67628 Microsoft CVE debrief

Microsoft SQL Server Information Disclosure Vulnerability allows an authorized attacker to disclose information over a network due to an out-of-bounds read in SQL Server. This vulnerability impacts SQL Server deployments, where an attacker with authorized access could potentially exploit this weakness to gain unauthorized information. SQL Server administrators should assess their exposure and prioritize patching to mitigate potential risks. The CVE record and related sources provide details on the vulnerability, but additional verification is needed to confirm affected versions and deployments.

Vendor
Microsoft
Product
Microsoft SQL Server 2017 (GDR)
CVSS
MEDIUM 4.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-13
Original CVE updated
2026-10-14
Advisory published
2026-10-13
Advisory updated
2026-10-14

Who should care

SQL Server administrators, defenders, and security teams should assess exposure and prioritize patching. This vulnerability affects SQL Server deployments, and those responsible for managing these systems need to verify their exposure and apply necessary patches to prevent potential information disclosure. This requires coordination with IT operations and security teams to ensure timely mitigation of the risk.

Why it matters

CVE-2026-67628 allows an authorized attacker to disclose information over a network due to an out-of-bounds read in SQL Server. Defenders should prioritize verifying exposure in SQL Server deployments and applying vendor patches.

  • Verify exposure in SQL Server deployments
  • Apply vendor patches to prevent information disclosure
  • Monitor for potential information disclosure

Technical summary

The vulnerability is caused by an out-of-bounds read in SQL Server, allowing an authorized attacker to disclose information over a network. This issue affects SQL Server deployments, where attackers with legitimate access could exploit this vulnerability to obtain unauthorized information. The technical impact involves potential information disclosure, emphasizing the need for defenders to verify exposure in their SQL Server deployments and apply vendor patches promptly.

Defensive priority

Defenders should prioritize verifying exposure in SQL Server deployments and applying vendor patches.

Recommended defensive actions

  • Verify SQL Server deployments for exposure
  • Apply vendor patches
  • Monitor for potential information disclosure

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional verification is needed to confirm affected versions and deployments.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-67628 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-67628

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

  • CVE-2026-67628 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-67628

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

Supplemental references

  • Microsoft SQL Server Information Disclosure Vulnerability

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/67xxx/CVE-2026-67628.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67628

    Supplemental source - vendor-advisory, patch

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.