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A vulnerability was found in Microsoft Azure Stack HCI OS and classified as critical. Affected by this issue is some unknown functionality. The manipulation leads to improper input validation. This vulnerability is handled as CVE-2025-27489. The attack needs to be approached locally. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability, which was classified as critical, was found in Microsoft Windows Server 2012 R2/Server 2016/Server 2019/Server 2022/Server 2025. Affected is an unknown function of the component Standards-Based Storage Management Service. The manipulation leads to resource consumption. This vulnerability is traded as CVE-2025-27486. It is possible to launch the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability, which was classified as critical, has been found in Microsoft Windows Server 2012 R2/Server 2016/Server 2019/Server 2022/Server 2025. This issue affects some unknown processing of the component Standards-Based Storage Management Service. The manipulation leads to resource consumption. The identification of this vulnerability is CVE-2025-27485. The attack may be initiated remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability was found in Microsoft Windows Server 2012 up to Server 2022 23H2. It has been classified as critical. Affected is an unknown function of the component Remote Desktop Services. The manipulation leads to use after free. This vulnerability is traded as CVE-2025-27480. It is possible to launch the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability was found in Microsoft Windows Server 2012 up to Server 2022 23H2 and classified as critical. This issue affects some unknown processing of the component Kerberos Key Distribution Proxy Service. The manipulation leads to insufficient resource pool. The identification of this vulnerability is CVE-2025-27479. The attack may be initiated remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability has been found in Microsoft Windows and classified as critical. This vulnerability affects unknown code of the component Local Security Authority. The manipulation leads to heap-based buffer overflow. This vulnerability was named CVE-2025-27478. The attack needs to be approached locally. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability, which was classified as critical, was found in Microsoft Windows. This affects an unknown part of the component Telephony Service. The manipulation leads to heap-based buffer overflow. This vulnerability is uniquely identified as CVE-2025-27477. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability, which was classified as critical, has been found in Microsoft Windows up to Server 2025. Affected by this issue is some unknown functionality of the component Digital Media. The manipulation leads to use after free. This vulnerability is handled as CVE-2025-27476. The attack may be launched remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability classified as critical was found in Microsoft Windows 11 22H2/11 23H2/11 24H2. Affected by this vulnerability is an unknown functionality of the component Update Stack. The manipulation leads to sensitive data storage in improperly locked memory. This vulnerability is known as CVE-2025-27475. Local access is required to approach this attack. There is no exploit available. It is recommended to apply a patch to fix this issue.

Alleged Data leak of an Unidentified Company in Canada

A vulnerability classified as problematic has been found in Microsoft Windows. Affected is an unknown function of the component Routing/Remote Access Service. The manipulation leads to uninitialized resource. This vulnerability is traded as CVE-2025-27474. It is possible to launch the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability was found in Microsoft Windows. It has been rated as critical. This issue affects some unknown processing in the library HTTP.sys. The manipulation leads to resource consumption. The identification of this vulnerability is CVE-2025-27473. The attack may be initiated remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability was found in Microsoft Windows 10/Server 2012/Server 2012 R2. It has been declared as problematic. This vulnerability affects unknown code of the component Mark of the Web. The manipulation leads to protection mechanism failure. This vulnerability was named CVE-2025-27472. The attack can be initiated remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability was found in Microsoft Windows. It has been classified as problematic. This affects an unknown part of the component Streaming Service. The manipulation leads to sensitive data storage in improperly locked memory. This vulnerability is uniquely identified as CVE-2025-27471. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability was found in Microsoft Windows Server 2012 R2/Server 2016/Server 2019/Server 2022/Server 2025 and classified as critical. Affected by this issue is some unknown functionality of the component Standards-Based Storage Management Service. The manipulation leads to resource consumption. This vulnerability is handled as CVE-2025-27470. The attack may be launched remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability has been found in Microsoft Windows and classified as critical. Affected by this vulnerability is an unknown functionality of the component Lightweight Directory Access Protocol. The manipulation leads to resource consumption. This vulnerability is known as CVE-2025-27469. The attack can be launched remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability, which was classified as critical, was found in Microsoft Windows up to Server 2025. Affected is an unknown function of the component Digital Media. The manipulation leads to use after free. This vulnerability is traded as CVE-2025-27467. It is possible to launch the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

A vulnerability, which was classified as critical, has been found in Microsoft Windows. This issue affects some unknown processing of the component Virtual Hard Disk. The manipulation leads to stack-based buffer overflow. The identification of this vulnerability is CVE-2025-26688. It is possible to launch the attack on the local host. There is no exploit available. It is recommended to apply a patch to fix this issue.

Microsoft Threat Intelligence Center (MSTIC) and Microsoft Security Response Center (MSRC) have discovered post-compromise exploitation of a newly discovered zero-day vulnerability in the Windows Common Log File System (CLFS) against a small number of targets. Microsoft released security updates to address the vulnerability, tracked as CVE 2025-29824, on April 8, 2025.

The post Exploitation of CLFS zero-day leads to ransomware activity appeared first on Microsoft Security Blog.

A vulnerability classified as critical has been found in Microsoft Windows. This affects an unknown part of the component TCP IP. The manipulation leads to sensitive data storage in improperly locked memory. This vulnerability is uniquely identified as CVE-2025-26686. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.