EUVD-2026-73550
GHSA-rw96-frpx-72q6
Severity by source
AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Network-reachable SYSTEM-context service, low privilege sufficient to trigger, user interaction gates automation; full CIA impact upon DiagTrack process compromise.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows Connected User Experiences and Telemetry allows an authorized attacker to elevate privileges over a network.
AnalysisAI
Heap-based buffer overflow in the Windows Connected User Experiences and Telemetry service (DiagTrack) enables low-privileged authenticated attackers to escalate privileges to SYSTEM-level over the network. Affecting Windows 10 (1809 through 22H2), Windows 11 (23H2 through 26H1), and Windows Server 2019 through 2025, the flaw carries a CVSS 8.0 rating with full CIA impact upon successful exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a low-privileged account on the target system or network (PR:L) - any standard domain or local user suffices; no administrative rights are needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H scores 8.0, reflecting network exploitability with low privilege requirements but a mandatory user interaction step (UI:R) that slightly moderates real-world exploitability. … 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-released security update corresponding to your Windows build: Windows 10 1809 and Server 2019 target build 10.0.17763.9245 or later; Windows 10 21H2 target 10.0.19044.7725 or later; Windows 10 22H2 target 10.0.19045.7725 or later; Windows 11 23H2 target 10.0.22631.7582 or later; Windows 11 24H2 and Server 2025 target 10.0.26100.9445 or later; Windows 11 25H2 target 10.0.26200.9445 or later; Windows 11 26H1 target 10.0.28000.2954 or later; Windows Server 2022 target 10.0.20348.5622 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all Windows 10 (1809-22H2), Windows 11 (23H2-26H1), and Windows Server 2019-2025 systems; segregate non-critical test systems for patch validation. …
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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