EUVD-2026-73656
GHSA-cc73-m23h-8xr8
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Microsoft's own AV:N is retained since cellular is a network vector; PR:N confirmed; I:N and A:N because only read/disclosure impact is described.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Out-of-bounds read in Windows Mobile Broadband allows an unauthorized attacker to disclose information over a network.
AnalysisAI
Out-of-bounds read in the Windows Mobile Broadband driver stack enables unauthenticated remote attackers to disclose sensitive memory contents over a cellular network connection. Affected systems span Windows 10 (21H2, 22H2) and Windows 11 (23H2 through 26H1) before their respective patched builds. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target system must have a Mobile Broadband (WWAN/cellular LTE or 5G) adapter physically installed and a mobile broadband connection active at the time of attack. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N = 7.5) signals high-confidence unauthenticated network exploitation with significant confidentiality impact but no integrity or availability impact. … 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 affected Windows release via Windows Update, WSUS, or Microsoft Update Catalog. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10 (versions 21H2 and 22H2) and Windows 11 (versions 23H2 through 26H1) systems, prioritizing those with active mobile broadband or cellular connectivity. …
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Same weakness CWE-125 – Out-of-bounds Read
View allSame technique Buffer Overflow
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External POC / Exploit Code
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