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KB5005627: Windows 8.1 and Windows Server 2012 R2 September 2021 Security Update

Description

The remote Windows host is missing security update 5005627 or cumulative update 5005613. It is, therefore, affected by multiple vulnerabilities : - An memory corruption vulnerability exists. An attacker can exploit this to corrupt the memory and cause unexpected behaviors within the system/application. (CVE-2021-26435) - An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2021-36960, CVE-2021-36962, CVE-2021-36969, CVE-2021-36972, CVE-2021-38629, CVE-2021-38635, CVE-2021-38636) - A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-36965, CVE-2021-36958, CVE-2021-40444) - An elevation of privilege vulnerability. An attacker can exploit this to gain elevated privileges. (CVE-2021-36955, CVE-2021-36963, CVE-2021-36964, CVE-2021-36974, CVE-2021-38628, CVE-2021-38630, CVE-2021-38633, CVE-2021-38638, CVE-2021-38639, CVE-2021-38667, CVE-2021-38671, CVE-2021-40447) - A denial of service (DoS) vulnerability. An attacker can exploit this issue to cause the affected component to deny system or application services. (CVE-2021-36961) - A security feature bypass vulnerability exists. An attacker can exploit this and bypass the security feature and perform unauthorized actions compromising the integrity of the system/application. (CVE-2021-38624) - A session spoofing vulnerability exists. An attacker can exploit this to perform actions with the privileges of another user. (CVE-2021-36959)


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