Passkey-themed social engineering leads to identity and cloud compromise

In this article 1. Attack chain overview 2. Attribution 3. Mitigation and protection guidance 4. Learn more Microsoft Security Research is tracking active cloud-based intrusions spanning multiple accounts in which unusual sign-ins were followed by threat actor-added authentication methods,...

Passkey-themed social engineering leads to identity and cloud compromise

In this article 1. Attack chain overview 2. Attribution 3. Mitigation and protection guidance 4. Learn more Microsoft Security Research is tracking active cloud-based intrusions spanning multiple accounts in which unusual sign-ins were followed by threat actor-added authentication methods,...

Microsoft fixes record 964 flaws, including 2 exploited zero-days

Microsoft’s September 2026 Patch Tuesday addresses 964 CVEs, including 104 rated Critical and 860 rated Important, making it the company’s largest Patch Tuesday release on record. Microsoft lists 974 CVEs in its full September security release. However, 10 of those affect cloud services or involv...

Vulnerabilities in Microsoft Windows

Microsoft has identified 666 vulnerabilities in Windows. Malicious actors can exploit these vulnerabilities to carry out attacks that can cause various types of damage, as listed in the table below. Microsoft has identified 666 vulnerabilities in Windows. The 32 most severe vulnerabilities are...

September Microsoft Patch Tuesday

September Microsoft Patch Tuesday. A total of 973 vulnerabilities were addressed - more than twice as many as in August. Seven products had 20 or more vulnerabilities fixed: Windows Biometric Service 64, Microsoft SQL Server 54, Windows DHCP Server 36, Microsoft Office Word 35, Windows NTFS 29,...

Researcher Drops New Microsoft Defender PoC Showing ShieldBreak Patch Can Be Bypassed

The security researcher known as Chaotic Eclipse has dropped a proof-of-concept PoC for yet another zero-day in Microsoft Defender. The vulnerability, codenamed ShieldCrash , is assessed to be a patch bypass for CVE-2026-69414 CVSS score: 7.8, also called ShieldBreak, which the researcher reporte...

Microsoft Patches Record 974 Flaws, Including Two Exploited Windows Zero-Days

Microsoft on Tuesday broke Patch Tuesday records by addressing an earth-shattering 974 vulnerabilities spanning its software portfolio, including two flaws that it said have been actively exploited in the wild. These include 723 flaws in Windows, 111 in Office and Office 2016, 62 in SQL, and 22 i...

Exploit for Improper Authorization in Microsoft

certighost-oneclick CVE-2026-54121 Certighost – One-Click...

ROS-20260909-73-0111

The vulnerability of the ANGLE component in Google Chrome and Microsoft Edge is related to errors during initialization of variables. Exploiting this vulnerability can allow an attacker to gain access to confidential data through a specially created HTML page...

ROS-20260909-73-0151

The vulnerability of the ANGLE component in Google Chrome and Microsoft Edge relates to reading data beyond the allowed buffer size. Exploiting this vulnerability can allow an attacker to access confidential data through a specially created HTML page...

ROS-20260909-73-0122

The vulnerability of the PDFium component in Google Chrome and Microsoft Edge relates to the false representation of critical information to the user interface. Exploiting this vulnerability allows a malicious actor to compromise data integrity through a specially created PDF file...

ROS-20260909-73-0160

The vulnerability of the CSS component in Google Chrome and Microsoft Edge is related to type conversion errors. Exploiting this vulnerability can allow an attacker to gain access to confidential data through a specially created HTML page...

ROS-20260909-73-0164

The vulnerability of the ANGLE component in Google Chrome and Microsoft Edge relates to buffer overflow attacks. Exploiting this vulnerability can allow an attacker to cause a service failure through a specially crafted HTML page...

ROS-20260909-73-0165

The vulnerability of the Glic component in Google Chrome and Microsoft Edge is related to the user interface’s false representation of critical information. Exploiting this vulnerability can allow an attacker to gain access to confidential data through a specially created HTML page...

ROS-20260909-73-0090

The vulnerability of the Extensions API in Google Chrome and Microsoft Edge browsers is related to a potential overflow condition. Exploiting this vulnerability could allow an attacker to gain access to confidential data...

ROS-20260909-73-0173

The vulnerability of the ANGLE component in Google Chrome and Microsoft Edge relates to reading data beyond the allowed buffer size. Exploiting this vulnerability can allow an attacker to access confidential data through a specially created HTML page...

ROS-20260909-73-0080

The vulnerability of the ANGLE component in Google Chrome and Microsoft Edge relates to reading data beyond the allowed buffer size. Exploiting this vulnerability can allow an attacker to access confidential data through a specially created HTML page...

ROS-20260909-73-0054

The vulnerability of the Forms component in Google Chrome and Microsoft Edge relates to the lack of protective measures for the web page structure. Exploiting this vulnerability can allow an attacker to gain access to confidential data and compromise its integrity through a specially created HTML...

ROS-20260909-73-0114

The vulnerability of the WebCodecs component in Google Chrome and Microsoft Edge relates to the execution of operations outside of the buffer in memory. Exploiting this vulnerability could allow a malicious actor to cause service interruptions through a specially created HTML page...

ROS-20260909-73-0050

The vulnerability of the Forms component in Google Chrome and Microsoft Edge browsers is related to the use of memory after it is freed. Exploiting this vulnerability could allow an attacker to cause a service failure through a specially created HTML page...