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PatchSiren cyber security CVE debrief

CVE-2026-55002 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record for CVE-2026-55002 was published on 2026-07-14T17:17:08.070Z and has not been modified since then. This vulnerability, affecting Microsoft SQL Server versions 2016 through 2025, allows an authorized attacker to elevate privileges locally due to external control of file name or path. It has a CVSS score of 7.8 and is classified as HIGH severity. To verify, defenders should review the official CVE record and assess their SQL Server deployments for potential exposure. The vulnerability can be mitigated by applying patches or updates provided by Microsoft. Additionally, defenders should monitor SQL Server logs for suspicious activity and implement additional security measures such as multi-factor authentication.

Vendor
Microsoft
Product
Microsoft SQL Server 2016 Service Pack 3 (GDR)
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-08-04
Advisory published
2026-07-14
Advisory updated
2026-08-04

Who should care

System administrators and security teams responsible for managing Microsoft SQL Server installations should prioritize patching this vulnerability to prevent potential privilege escalation attacks. They should review their SQL Server deployments, assess potential exposure, and apply patches or updates as needed. Additionally, they should monitor SQL Server logs for suspicious activity and implement additional security measures such as multi-factor authentication.

Technical summary

The vulnerability allows an authorized attacker to elevate privileges locally due to external control of file name or path in SQL Server. This issue has a CVSS score of 7.8 and is classified as HIGH severity. Affected products include Microsoft SQL Server versions 2016 through 2025. The vulnerability can be mitigated by applying patches or updates provided by Microsoft.

Defensive priority

Authorized attackers may leverage local privilege escalation, requiring immediate attention.

Recommended defensive actions

  • Apply patches or updates provided by Microsoft to address the vulnerability
  • Restrict access to sensitive areas of SQL Server
  • Monitor SQL Server logs for suspicious activity
  • Implement additional security measures such as multi-factor authentication

Evidence notes

The CVE record indicates an external control of file name or path in SQL Server, allowing an authorized attacker to elevate privileges locally. The CVSS score is 7.8 with a HIGH severity. Affected products include various versions of Microsoft SQL Server from 2016 to 2025. To verify, defenders should review the official CVE record and assess their SQL Server deployments for potential exposure.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-55002 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-55002

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

  • CVE-2026-55002 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-55002

    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.