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The affected architectures include x86, x86\u201164 and ARM64 variants as listed in the CPE data.", "description_and_impact": "Use after free in the Windows Speech runtime allows a code path that leads to local privilege escalation. The flaw arises when an authorized user interacts with the speech subsystem, causing a use\u2011after\u2011free and memory corruption that can be abused to execute arbitrary code with SYSTEM privileges. This is categorized as CWE\u2011416 and involves race conditions (CWE\u2011362). The result is that a local attacker can gain elevated privileges on the affected machine, enabling them to install software, modify system settings, or compromise confidential data.", "risk_and_exploitability": "The CVSS score of 7.8 indicates high severity, and while the EPSS score is not publicly available, the flaw requires a local user context to trigger. The vulnerability is not listed in CISA\u2019s KEV catalog, implying no confirmed public exploit so far. Nonetheless, because an authorized local attacker can trigger the issue, the risk is significant if the system remains unpatched, especially in environments where privileged user accounts are available."}}}}, "created": "2026-04-15T14:45:03.391282+00:00", "updated": "2026-04-15T15:15:06.494436+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$windows_10_1809", "microsoft$PRODUCT$windows_10_21h2", "microsoft$PRODUCT$windows_10_22h2", "microsoft$PRODUCT$windows_11_22h3", "microsoft$PRODUCT$windows_11_23h2", "microsoft$PRODUCT$windows_11_24h2", "microsoft$PRODUCT$windows_11_25h2", "microsoft$PRODUCT$windows_11_26h1"]}