Advertisement
CVE-2026-42897: Microsoft Exchange OWA XSS Zero-Day Under Attack
Active Zero-Day XSS vulnerability, CVE-2026-42897, impacts Microsoft Exchange OWA, allowing mailbox compromise. No patch available.
Microsoft Exchange Zero-Day and npm Supply Chain Worm Under Active Use
Critical security briefing on the active exploitation of an Exchange Server zero-day, npm supply chain worms, and Cisco network control vulnerabilities.
Windows 11 Resizable Taskbar and Start Menu Preview Analysis
Microsoft initiates testing for resizable taskbar and Start menu features in Windows 11 Insider builds, addressing long-standing UI customization requests.
Windows 11 KB5089549 Security Update Installation Failure Analysis
Microsoft confirms Windows 11 KB5089549 security update fails with error 0x800f0922. Learn how to troubleshoot and resolve these installation issues.
Tycoon2FA Phishing Kit Targets Microsoft 365 via Device Code Flow
Tycoon2FA phishing kit now leverages Microsoft 365 device code flows and Trustifi URL abuse to bypass MFA and hijack enterprise accounts.
Azure Backup for AKS Vulnerability: Risks of Silent Patches
A reported Azure Backup for AKS vulnerability allowed potential cluster compromise. Learn why Microsoft rejected the report and the impact of silent fixes.
BlackFile: Analyzing UNC6671 Vishing & Cloud Data Extortion
Examines UNC6671's BlackFile vishing, AiTM, and cloud data exfiltration tactics against Microsoft 365 & Okta. Actionable mitigations included.
CVE-2026-42897: Microsoft Exchange XSS Under Active Exploitation
CISA adds CVE-2026-42897, a Microsoft Exchange Server Cross-Site Scripting vulnerability, to KEV Catalog due to active exploitation. Immediate patching advised.
Pwn2Own Berlin: Microsoft Exchange, Windows 11 Zero-Day Exploits
Zero-day vulnerabilities in Microsoft Exchange, Windows 11, and Red Hat Enterprise Linux demonstrated at Pwn2Own Berlin. Runtime Rebel details the impact.
Microsoft Edge: Hardening Against Cleartext Password Exposure
Microsoft Edge will no longer load cleartext passwords into memory at startup, mitigating a significant local credential access risk for users.
CVE-2026-42897: Microsoft Exchange Server Zero-Day Exploited in Wild
Microsoft warns of CVE-2026-42897, a critical Exchange Server zero-day exploited in the wild. Implement Extended Protection mitigations immediately to secure systems.
CVE-2024-49040: Microsoft Exchange Server Spoofing Vulnerability
Microsoft warns of CVE-2024-49040, a zero-day spoofing vulnerability in Exchange Server exploited to bypass security filters and impersonate trusted senders.
Microsoft Introduces Remote Rollback for Faulty Windows Drivers
Microsoft expands its Known Issue Rollback capability to Windows drivers, allowing remote remediation of faulty updates that cause boot loops or crashes.
CVE-2026-42897: How Attackers Exploit Microsoft Exchange Server
Microsoft warns of active exploitation of CVE-2026-42897, a critical spoofing and XSS vulnerability in on-premise Exchange Server triggered via email.
KongTuke Exploits Microsoft Teams for Rapid Corporate Breaches
Initial access broker KongTuke leverages Microsoft Teams to deploy DarkGate malware, achieving network persistence in under five minutes via social engineering.
Outlook Junk Folder Bypass: How Attackers Hide Malicious URLs
Discover how attackers bypass Microsoft Outlook's Junk folder link preview protection using HTML manipulation to hide malicious phishing URLs from users.
Microsoft and Palo Alto Networks Use AI to Identify Dozens of Vulnerabilities
Microsoft and Palo Alto Networks leverage AI-powered tools MDASH and Mythos to identify dozens of critical software vulnerabilities before exploitation.
FamousSparrow Exploits Microsoft Exchange in Azerbaijani Energy Campaign
Bitdefender reveals a multi-wave intrusion by FamousSparrow targeting an Azerbaijani oil and gas firm via repeated Microsoft Exchange exploitation.
Microsoft MDASH AI Discovers 16 Windows Vulnerabilities
Microsoft reveals MDASH, a new AI-driven agentic scanning harness that discovered 16 vulnerabilities in Windows, now fixed in recent Patch Tuesday updates.
Microsoft Patch Tuesday: 9 Critical Flaws Among 137 Total Fixes
Microsoft's latest Patch Tuesday addresses 137 vulnerabilities, including 9 critical flaws. While no zero-days were reported, timely patching is essential.
Microsoft May 2026 Patch Tuesday: 274 Vulnerabilities Addressed
Microsoft's May 2026 Patch Tuesday addresses 137 vulnerabilities in Windows and 137 Chromium-related issues affecting Microsoft Edge.
Microsoft's 137 Patches: Critical Flaws in Azure, Windows, Dynamics
Microsoft's latest security updates address 137 vulnerabilities, including critical flaws in Azure, Windows, and Dynamics 365, requiring immediate patching.
Microsoft Edge Plaintext Password Exposure and ICS Zero-Day Risks
Analysis of Microsoft Edge plaintext password storage risks, newly disclosed ICS zero-day vulnerabilities, and Telegram-based data exfiltration TTPs.
MuddyWater Exploits Microsoft Teams via Chaos Ransomware Decoy
Iranian APT MuddyWater utilizes Microsoft Teams social engineering and Chaos ransomware decoys to mask state-sponsored espionage operations.