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PatchSiren cyber security CVE debrief

CVE-2026-57979 Microsoft CVE debrief

CVE-2026-57979 is an out-of-bounds read vulnerability in Windows RDP that allows an unauthorized attacker to disclose information over a network. The vulnerability has a CVSS score of 6.5 and a severity of MEDIUM. Microsoft has released a patch for this vulnerability. The vulnerability exists in the Windows RDP component, allowing an attacker to exploit it and disclose sensitive information. Organizations should prioritize patching to prevent potential information disclosure.

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

Organizations using Windows RDP, particularly those with exposed RDP services, should prioritize patching this vulnerability to prevent potential information disclosure. IT teams and security professionals responsible for managing Windows systems and networks should review and update their configurations to ensure protection against this vulnerability.

Technical summary

The vulnerability exists in the Windows RDP component, allowing an attacker to exploit it and disclose sensitive information. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. The weakness associated with this vulnerability is CWE-125. The vulnerability has been confirmed in Windows RDP, and defenders should verify the patching status of their systems.

Defensive priority

Patching this vulnerability is crucial to prevent potential information disclosure. Organizations should prioritize patching to prevent exploitation.

Recommended defensive actions

  • Apply the patch released by Microsoft
  • Review and update Windows RDP configurations
  • Monitor network activity for suspicious RDP connections
  • Verify the patching status of Windows RDP systems
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record was published on 2026-07-14T17:17:11.317Z and last modified on 2026-07-20T17:05:59.037Z. The NVD entry is currently Analyzed. The vulnerability has been confirmed in Windows RDP, and defenders should verify the patching status of their systems. Evidence from Microsoft confirms the vulnerability's existence and impact.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-57979 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-57979

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

  • CVE-2026-57979 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-57979

    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.