EUVD-2026-73506
GHSA-qw4r-wvrf-4wxq
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack vector and low-privilege requirement match the 'authorized attacker' description; AC:L reflects no special conditions needed to trigger the heap overflow.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Microsoft Windows Speech allows an authorized attacker to elevate privileges locally.
AnalysisAI
Heap-based buffer overflow in Microsoft Windows Speech enables local privilege escalation across Windows 10, Windows 11, and Windows Server platforms from 2016 through 2025. An authorized local attacker holding only a standard user account can exploit the CWE-122 flaw without user interaction to obtain full system compromise (C:H/I:H/A:H), effectively achieving SYSTEM-level privileges. …
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 | Exploitation requires an authorized local account on the target Windows system - equivalent to CVSS PR:L, meaning a standard (non-administrative) user account is sufficient; no administrative privileges are needed to trigger the flaw. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately reflects a local privilege escalation requiring only a standard user account, consistent with Microsoft's characterization of an 'authorized attacker.' The Low attack complexity rating is significant: no race condition, special environment, or preconfigured state is required to trigger the overflow, implying that weaponization would be mechanically straightforward for an experienced exploit developer. … 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 cumulative updates for each affected Windows build as detailed in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69444. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Windows 10, 11, and Server 2016-2025 systems in your environment to establish baseline exposure and identify business-critical assets requiring prioritized patching. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today