Microsoft Revokes 200 Fraudulent Certificates Used in Rhysida Ransomware Campaign

Microsoft on Thursday disclosed that it revoked more than 200 certificates used by a threat actor it tracks as Vanilla Tempest to fraudulently sign malicious binaries in ransomware attacks. The certificates were "used in fake Teams setup files to deliver the Oyster backdoor and ultimately deploy...

CVE-2025-59211

Exposure of sensitive information to an unauthorized actor in Windows Push Notification Core allows an authorized attacker to disclose information locally...

CVE-2025-59184

Exposure of sensitive information to an unauthorized actor in Windows High Availability Services allows an authorized attacker to disclose information locally...

CVE-2025-59186

Exposure of sensitive information to an unauthorized actor in Windows Kernel allows an authorized attacker to disclose information locally...

EUVD-2025-34273

Exposure of sensitive information to an unauthorized actor in Microsoft Failover Cluster Virtual Driver allows an authorized attacker to disclose information locally...

EUVD-2025-34291

Exposure of sensitive information to an unauthorized actor in Windows Push Notification Core allows an authorized attacker to disclose information locally...

EUVD-2025-34387

Exposure of sensitive information to an unauthorized actor in Windows Push Notification Core allows an authorized attacker to disclose information locally...

EUVD-2025-34288

Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an unauthorized attacker to perform spoofing over a network...

EUVD-2025-34397

Exposure of sensitive information to an unauthorized actor in Windows Kernel allows an authorized attacker to disclose information locally...

EUVD-2025-34306

Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an unauthorized attacker to perform spoofing over a network...

EUVD-2025-34303

Exposure of sensitive information to an unauthorized actor in Windows Failover Cluster allows an authorized attacker to disclose information locally...

EUVD-2025-34334

Exposure of sensitive information to an unauthorized actor in Windows Kernel allows an authorized attacker to disclose information locally...

CVE-2025-59211

Exposure of sensitive information to an unauthorized actor in Windows Push Notification Core allows an authorized attacker to disclose information locally...

CVE-2025-59211

Exposure of sensitive information to an unauthorized actor in Windows Push Notification Core allows an authorized attacker to disclose information locally...

CVE-2025-59186

Exposure of sensitive information to an unauthorized actor in Windows Kernel allows an authorized attacker to disclose information locally...

CVE-2025-59188

Exposure of sensitive information to an unauthorized actor in Windows Failover Cluster allows an authorized attacker to disclose information locally...

CVE-2025-59186

Exposure of sensitive information to an unauthorized actor in Windows Kernel allows an authorized attacker to disclose information locally...

CVE-2025-59184

Exposure of sensitive information to an unauthorized actor in Windows High Availability Services allows an authorized attacker to disclose information locally...

CVE-2025-55683

Exposure of sensitive information to an unauthorized actor in Windows Kernel allows an authorized attacker to disclose information locally...

EUVD-2025-34436

A vulnerability in an AOS firmware binary allows an authenticated malicious actor to permanently delete necessary boot information. Successful exploitation may render the system unbootable, resulting in a Denial of Service that can only be resolved by replacing the affected hardware...