EUVD-2026-44111
GHSA-cmg3-vm26-f974
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Network-based RDP off-by-one leaks memory contents at high severity; no privileges required per description; user interaction required to trigger protocol exchange; no integrity or availability impact.
Primary rating from Vendor (microsoft).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
2DescriptionNVD
Off-by-one error in Windows Remote Desktop Protocol allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Off-by-one memory boundary error in the Windows Remote Desktop Protocol exposes sensitive memory contents over the network to unauthenticated remote attackers on all major Windows client and server releases. The CWE-193 root cause allows the RDP parser to read one element beyond an allocated buffer boundary, yielding a high-confidentiality-impact information disclosure (C:H) with no integrity or availability consequence. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | CVSS PR:N confirms no authentication is required from the attacker's perspective. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) reflects a network-accessible, low-complexity flaw requiring no privileges - but critically requiring user interaction (UI:R), which prevents fully automated or wormable exploitation and distinguishes this from the most severe RDP vulnerabilities. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker positions a malicious RDP server on a network reachable by the target, then lures a victim user into connecting to it - for example, via a phishing link or a compromised internal redirect. When the user initiates or interacts with the RDP session, the off-by-one error in the RDP protocol parser causes the client or server to read one byte beyond an allocated buffer, with the out-of-bounds memory contents returned to the attacker over the network. … |
| Remediation | Apply the vendor-released patch via Windows Update or WSUS, referencing the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50497; exact patched version numbers are not specified in the available data and should be confirmed against that advisory. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-193 – Off-by-one Error
View allSame technique Information Disclosure
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External POC / Exploit Code
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