EUVD-2026-63100
GHSA-rr83-9vpv-vfgg
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attacker controls the server endpoint (PR:N), victim must connect (UI:R); only memory disclosure occurs, so I:N and A:N are appropriate.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
2DescriptionCVE.org
Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Out-of-bounds read in Microsoft Windows App for Mac (versions 11.0.0 through 11.3.8) enables a remote unauthenticated attacker to disclose sensitive memory contents over the network when a victim connects to a malicious Remote Desktop server. The CVSS vector (AV:N/AC:L/PR:N/UI:R) confirms network reachability without attacker authentication, though successful exploitation requires the victim to initiate or be lured into an RDP session. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must be running Microsoft Windows App for Mac in a version from 11.0.0 to 11.3.8 on macOS. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) signals a meaningful but conditionally exploitable information disclosure: reachable over the network with no attack complexity or attacker privilege, but requiring active user interaction (UI:R) that constrains fully automated mass exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Microsoft Windows App for Mac to version 11.3.9 or later, which is the vendor-released patch per the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69550. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Buffer Overflow
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External POC / Exploit Code
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