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CVE-2026-50677 Microsoft CVE debrief

CVE-2026-50677 is a high-severity vulnerability in Windows Media that allows an authorized attacker to elevate privileges locally. The vulnerability has a CVSS score of 7.8 and is classified as HIGH. Microsoft has released a patch for this vulnerability. The vulnerability is a use-after-free issue in Windows Media that can be exploited by an authorized attacker to elevate privileges locally. System administrators and users of Windows Media should be aware of this vulnerability and take necessary precautions to protect their systems. The CVE record was published on 2026-07-14T18:18:02.063Z and was last modified on 2026-07-22T16:18:46.300Z.

Vendor
Microsoft
Product
Windows 11 Version 24H2
CVSS
HIGH 7.8
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 users of Windows Media should be aware of this vulnerability and take necessary precautions to protect their systems. The vulnerability affects Windows Media and has a CVSS score of 7.8. The vulnerability is classified as HIGH. Microsoft has released a patch for this vulnerability.

Technical summary

The vulnerability is a use-after-free issue in Windows Media that can be exploited by an authorized attacker to elevate privileges locally. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The vulnerability affects Windows Media and has a CVSS score of 7.8. The vulnerability is classified as HIGH. Microsoft has released a patch for this vulnerability.

Defensive priority

High

Recommended defensive actions

  • Apply the patch released by Microsoft
  • Ensure that Windows Media is up-to-date
  • Monitor system logs for suspicious activity
  • Implement additional security measures to prevent local privilege escalation
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record was published on 2026-07-14T18:18:02.063Z and was last modified on 2026-07-22T16:18:46.300Z. The NVD entry is currently Analyzed. This vulnerability affects Windows Media and has a CVSS score of 7.8. The vulnerability is classified as HIGH. Microsoft has released a patch for this vulnerability. The evidence provided is limited, and defenders should verify the affected scope and severity. The CVE record was obtained from the NVD, and its accuracy is dependent on the information provided by the vendor.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50677 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50677

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

  • CVE-2026-50677 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50677

    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.