EUVD-2026-56326
GHSA-ph3w-649w-x6jf
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L confirmed by local-only exploitation; PR:L because attacker must be an authorized local user; full C/I/A impact reflects SYSTEM-level escalation with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Missing authentication for critical function in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows Remote Desktop Services affects a broad range of Windows Server and client platforms, allowing a locally authenticated low-privilege user to elevate to SYSTEM-level access by invoking a critical RDS function that lacks proper authentication enforcement (CWE-306). The CVSS vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H reflects low attack complexity and full confidentiality, integrity, and availability impact once local access is established. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must hold an existing local session on the target system with at least low-privilege credentials - the CVSS PR:L and the description's phrase 'authorized attacker' both confirm authenticated local access is required; unauthenticated network-based exploitation is not possible (AV:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 score with vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H presents a high-severity but locally-scoped threat. … 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 | Apply Microsoft's released security updates documented at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61367. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows Server and client systems with RDS enabled and identify local user accounts with potential exposure. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Windows 10 1607
View allWindows MSHTML component contains a remote code execution vulnerability that allows attackers to craft malicious ActiveX
<p>A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged fi
Windows MSDT (Microsoft Support Diagnostic Tool) allows remote code execution when called via the ms-msdt URL protocol f
The Windows VBScript engine contains a remote code execution vulnerability in object handling that allows full system co
Windows Print Spooler Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no auth
Windows Search Remote Code Execution Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely explo
Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resour
Windows Kernel contains a TOCTOU race condition vulnerability allowing local privilege escalation, exploited by the OilR
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in
Windows Internet Shortcut Files (.url) contain an external control vulnerability (CVE-2025-33053, CVSS 8.8) that enables
Elevation of privilege in the Windows Win32k kernel-mode driver allows a local, low-privileged attacker to escalate to S
Same technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today