PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-50504 Microsoft CVE debrief

CVE-2026-50504 is a MEDIUM severity vulnerability in Microsoft's Remote Desktop Client, caused by a buffer over-read. This allows an unauthorized attacker to disclose information over a network. The vulnerability has a CVSS score of 6.5. Affected products include various versions of Windows 10, Windows 11, and Windows Server. The vulnerability has a significant impact on organizations using Remote Desktop Client, and administrators should take necessary precautions to mitigate it.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
MEDIUM 6.5
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

Administrators and users of Microsoft Remote Desktop Client should be aware of this vulnerability and take necessary precautions to mitigate it. The vulnerability has a significant impact on organizations using Remote Desktop Client, and administrators should review the official advisory for more details. Security teams should prioritize patching and monitoring for suspicious activity.

Technical summary

The vulnerability is caused by a buffer over-read in the Remote Desktop Client. This allows an unauthorized attacker to disclose information over a network. The vulnerability has a CVSS score of 6.5 and a severity of MEDIUM. The affected products include various versions of Windows 10, Windows 11, and Windows Server. The vulnerability can be mitigated by applying the patch provided by Microsoft and ensuring Remote Desktop Client is up-to-date.

Defensive priority

High

Recommended defensive actions

  • Apply the patch provided by Microsoft
  • Ensure Remote Desktop Client is up-to-date
  • Monitor for suspicious activity
  • Implement compensating controls such as network segmentation
  • Conduct regular vulnerability assessments

Evidence notes

The CVE record was published on 2026-07-14T18:17:57.617Z and was last modified on 2026-07-22T14:58:47.480Z. The NVD entry is currently Analyzed. The vulnerability affects various versions of Windows 10, Windows 11, and Windows Server. Administrators should verify the affected products and take necessary precautions to mitigate the vulnerability. The CVE record provides limited information, and defenders should review the official advisory for more details.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50504 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50504

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

  • CVE-2026-50504 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50504

    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.