EUVD-2026-56625
GHSA-6v5r-4mgh-vw5f
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attacker needs no privileges to host a malicious RDP server; user must actively connect (UI:R); OOB read exposes memory with high confidentiality impact but no write or DoS capability.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Information disclosure in Windows Remote Desktop Client across nearly all supported Windows versions exposes client-side memory contents to a network-based attacker who controls a malicious RDP server. The flaw is an out-of-bounds read (CWE-125) triggered when the client parses crafted server-sent protocol data, resulting in high confidentiality impact with no integrity or availability consequence. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that a victim user actively initiates an RDP connection to an attacker-controlled server - this is the concrete UI:R prerequisite confirmed by the CVSS vector (UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) accurately reflects a meaningful but bounded risk profile. … 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 | The primary remediation is to apply Microsoft's security update, which provides patched builds for all affected Windows versions as listed in MSRC advisory https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61921. … 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 Information Disclosure
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External POC / Exploit Code
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