EUVD-2026-73103
GHSA-wq2j-996q-98vw
Severity by source
AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack vector, low-privilege requirement, and high complexity for heap-grooming double-free; full C/I/A post-exploitation on the vulnerable system with no scope change.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
4DescriptionCVE.org
Double free in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
AnalysisAI
Local privilege escalation in Windows Routing and Remote Access Service (RRAS) via a double-free memory corruption flaw (CWE-415) allows an authorized local attacker with low privileges to achieve full system compromise across a broad range of Windows 10, Windows 11, and Windows Server releases from 2012 through 2025. The CVSS vector (AV:L/AC:H/PR:L) reflects that exploitation requires local access and elevated complexity, limiting opportunistic automated attacks but not targeted use. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold a valid low-privileged account on the target machine (PR:L - domain user or local user) and have the ability to invoke RRAS service interfaces locally. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 7.0 with vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H accurately characterizes a moderate-to-high severity local privilege escalation. … 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 the Microsoft security update for the applicable Windows version as identified by the EUVD affected-version data: for Windows Server 2025 update to build 10.0.26100.33438 or later, for Windows Server 2022 update to build 10.0.20348.5622 or later, for Windows Server 2019/Windows 10 1809 update to build 10.0.17763.9245 or later, for Windows Server 2016/Windows 10 1607 update to build 10.0.14393.9512 or later, for Windows Server 2012 update to build 6.2.9200.26349 or later, for Windows Server 2012 R2 update to build 6.3.9600.23397 or later, and for Windows 10/11 client versions per their respective build thresholds listed above. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, Windows 11, and Windows Server systems in your environment and assess which run RRAS; while no public exploit has been identified at time of analysis, the broad applicability and system-level impact warrant immediate attention. …
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Same weakness CWE-415 – Double Free
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External POC / Exploit Code
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