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PatchSiren cyber security CVE debrief

CVE-2026-50498 Microsoft CVE debrief

CVE-2026-50498 is an Elevation of Privilege Vulnerability in the Windows Universal Disk Format File System Driver (UDFS). The vulnerability has a CVSS score of 7.8 and is classified as HIGH severity. Microsoft has released a patch for this vulnerability. The vulnerability allows an attacker to gain elevated privileges on a vulnerable system. System administrators and users of Windows operating systems should be aware of this vulnerability and take necessary precautions to protect their systems.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-14
Original CVE updated
2026-07-21
Advisory published
2026-07-14
Advisory updated
2026-07-21

Who should care

System administrators and users of Windows operating systems should be aware of this vulnerability and take necessary precautions to protect their systems. This includes applying patches, monitoring system logs, and reviewing compensating controls.

Technical summary

The Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability, tracked as CVE-2026-50498, allows an attacker to gain elevated privileges on a vulnerable system. The vulnerability has been analyzed and has a CVSS vector of CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. The vulnerability affects the Windows operating system and has a high CVSS score of 7.8.

Defensive priority

High priority should be given to patching vulnerable systems to prevent potential exploitation.

Recommended defensive actions

  • Apply the patch released by Microsoft to vulnerable systems.
  • Ensure that all Windows operating systems are up-to-date with the latest security patches.
  • Monitor system logs for potential exploitation attempts.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-07-14T18:17:56.640Z and was last modified on 2026-07-21T18:25:25.890Z. The NVD entry is currently Analyzed. The vulnerability has been identified in the Windows Universal Disk Format File System Driver (UDFS). Microsoft has released a patch for this vulnerability. However, the specific details of the vulnerability, such as its potential impact and affected systems, are still being reviewed and verified.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50498 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50498

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

  • CVE-2026-50498 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50498

    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.