PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-50451 Microsoft CVE debrief

CVE-2026-50451 is a HIGH severity vulnerability in Windows Routing and Remote Access Service (RRAS) that allows an authorized attacker to elevate privileges locally due to missing authentication for a critical function. The CVE record was published on 2026-07-14T18:17:49.787Z and was last modified on 2026-07-21T16:50:28.373Z. The NVD entry is currently Analyzed.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-22
Advisory published
2026-07-14
Advisory updated
2026-07-22

Who should care

System administrators and security teams responsible for Windows Routing and Remote Access Service (RRAS) should be aware of this vulnerability and take immediate action to mitigate the risk. This vulnerability requires local access and authorization, but can still have significant impact if exploited.

Technical summary

The vulnerability exists in the Windows Routing and Remote Access Service (RRAS) due to missing authentication for a critical function. This allows an authorized attacker to elevate privileges locally. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 7.1, indicating a HIGH severity level. The CVSS vector is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Defensive priority

Patching this vulnerability should be a high priority for organizations using affected versions of Windows. Administrators should apply the available patch as soon as possible to prevent potential exploitation.

Recommended defensive actions

  • Apply the available patch from Microsoft as soon as possible.
  • Review and update access controls for Windows Routing and Remote Access Service (RRAS) to ensure that only authorized personnel have access.
  • Monitor system logs for potential exploitation attempts.
  • Consider implementing additional security measures such as multi-factor authentication and network segmentation.

Evidence notes

The CVE record and NVD detail provide information on the vulnerability, its severity, and affected systems. Microsoft has provided a patch and advisory for this vulnerability. The NVD entry is currently Analyzed, indicating that the vulnerability has been thoroughly reviewed and verified.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50451 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50451

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

  • CVE-2026-50451 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50451

    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.