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Microsoft

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LOW
Vulnerabilities

Microsoft Outlook Fixes Gmail IMAP Sync Bug in Version 2404

Microsoft resolves a persistent bug in Classic Outlook causing IMAP synchronization failures and connection errors for Gmail and Yahoo mail users.

Runtime Rebel Intel
3 min read · Mar 24, 2026
MEDIUM
Vulnerabilities

Microsoft Xbox One Hardware Security Defeated via Bliss Exploit

Security researchers have bypassed Microsoft Xbox One hardware security using the Bliss voltage glitching exploit, enabling unsigned code execution.

Runtime Rebel Intel
3 min read · Mar 23, 2026
MEDIUM
Cloud Security

Exchange Online Service Change: Solving Outlook for Mac Access Issues

Microsoft addresses a service disruption in Exchange Online caused by virtual account updates affecting Outlook for Mac and mobile device connectivity.

Runtime Rebel Intel
4 min read · Mar 23, 2026
IRS Phishing Campaign Targets 29,000 Users with RMM Malware
HIGH
Threat Intel

IRS Phishing Campaign Targets 29,000 Users with RMM Malware

Microsoft warns of a widespread IRS phishing campaign targeting 29,000 users with tax-themed lures to deploy RMM malware and steal enterprise credentials.

Runtime Rebel Intel
4 min read · Mar 23, 2026
MEDIUM
Identity & Access

KB5085516 Emergency Update: Fix for Microsoft Account Sign-in Failures

Microsoft releases emergency KB5085516 update to resolve widespread authentication failures affecting OneDrive, Teams, and other cloud-integrated services.

Runtime Rebel Intel
3 min read · Mar 23, 2026
MEDIUM
Threat Intel

Azure Monitor Alert Abuse: Detecting Callback Phishing Campaigns

Threat actors are abusing Microsoft Azure Monitor Action Groups to send legitimate-looking callback phishing emails to bypass traditional security filters.

Runtime Rebel Intel
4 min read · Mar 21, 2026
MEDIUM
Vulnerabilities

KB5079473 Update Breaks Microsoft Account Sign-ins on Windows 11

Microsoft confirms the KB5079473 March update for Windows 11 disrupts sign-ins for Teams and OneDrive. Technical analysis and remediation for affected systems.

Runtime Rebel Intel
4 min read · Mar 20, 2026
HIGH
Cloud Security

Secure Microsoft Intune Systems Against Wipe Attacks - CISA Warning

CISA urges organizations to secure Microsoft Intune following a breach at Stryker where attackers used the management tool to wipe corporate systems.

Runtime Rebel Intel
4 min read · Mar 19, 2026
HIGH
Threat Intel

Hardening Endpoint Management Systems: CISA Alert on Intune Attacks

CISA warns of active cyberattacks targeting endpoint management systems, specifically Microsoft Intune.

Runtime Rebel Intel
4 min read · Mar 19, 2026
CRITICAL
Vulnerabilities

CVE-2026-20963: Microsoft SharePoint Deserialization Exploit — Patch Now

CISA adds CVE-2026-20963, a Microsoft SharePoint deserialization vulnerability, to its KEV catalog due to active exploitation.

Runtime Rebel Intel
4 min read · Mar 18, 2026
INFO
Supply Chain

Tech Giants Pledge $12.5M to Bolster Open Source Software Security

Anthropic, AWS, Google, Microsoft, and OpenAI invest $12.5 million into the OpenSSF to mitigate systemic supply chain risks in open source ecosystems.

Runtime Rebel Intel
4 min read · Mar 17, 2026
INFO
Threat Intel

Tech Giants Sign Industry Pact to Combat Online Scams and Fraud

Leading tech firms including Google, Meta, and Microsoft sign a collaborative pact to enhance cross-platform intelligence sharing and fight online scams.

Runtime Rebel Intel
3 min read · Mar 17, 2026
MEDIUM
Vulnerabilities

Windows 11 24H2 Samsung Galaxy Book C: Drive Access Fix

Microsoft releases technical guidance to resolve C: drive access denied errors and application failures on Samsung Galaxy Book devices running Windows 11.

Runtime Rebel Intel
4 min read · Mar 17, 2026
HIGH
Threat Intel

Remote Device Wiping Attack Hits Stryker via Microsoft Environment

An attack on medical technology firm Stryker resulted in the remote wiping of tens of thousands of devices by leveraging internal management tools and identity.

Runtime Rebel Intel
3 min read · Mar 16, 2026
MEDIUM
Cloud Security

Microsoft Exchange Online Outage: Troubleshooting Access Failures

Microsoft Exchange Online service disruption prevents global users from accessing mailboxes and calendars. Review technical impacts and mitigation steps.

Runtime Rebel Intel
3 min read · Mar 16, 2026
HIGH
Vulnerabilities

Windows 11 24H2 RRAS RCE: Microsoft Issues OOB Hotpatch Fix

Microsoft releases an out-of-band hotpatch for Windows 11 24H2 to address critical RRAS remote code execution vulnerabilities CVE-2024-43513 and CVE-2024-49053.

Runtime Rebel Intel
3 min read · Mar 15, 2026
HIGH
Vulnerabilities

Windows 11 C: Drive Access Failure on Samsung PCs - Mitigation Guide

Microsoft investigates an issue where February 2026 Windows 11 security updates prevent C: drive access on Samsung laptops, blocking all applications.

Runtime Rebel Intel
4 min read · Mar 14, 2026
INFO
Cloud Security

Microsoft Investigates Classic Outlook Sync & Connection Issues

Microsoft is actively investigating widespread classic Outlook desktop client synchronization and connectivity problems impacting users globally.

Runtime Rebel Intel
4 min read · Mar 13, 2026
Storm-2561 Leverages SEO Poisoning for Credential Theft
HIGH
Threat Intel

Storm-2561 Leverages SEO Poisoning for Credential Theft

Microsoft warns of Storm-2561's credential theft campaign using SEO poisoning to distribute fake, digitally signed VPN clients disguised as legitimate enterprise…

Runtime Rebel Intel
5 min read · Mar 13, 2026
HIGH
Vulnerabilities

Microsoft Patch Tuesday Analysis: Addressing Critical RCE and Quishing

Technical analysis of the March 2026 Patch Tuesday cycle, focusing on Windows RCE, kernel-level privilege escalation, and emerging QR code phishing trends.

Runtime Rebel Intel
3 min read · Mar 13, 2026
HIGH
Vulnerabilities

CVE-2024-21410: Protect Microsoft Exchange from NTLM Relay Attacks

Deep dive into CVE-2024-21410, a critical privilege escalation vulnerability in Microsoft Exchange. Learn how to detect exploits and implement EPA mitigations.

Runtime Rebel Intel
3 min read · Mar 12, 2026
Microsoft March Patch Tuesday: 84 Flaws Fixed Including Public Zero-Days
HIGH
Vulnerabilities

Microsoft March Patch Tuesday: 84 Flaws Fixed Including Public Zero-Days

Microsoft releases March security updates for 84 vulnerabilities, including 8 Critical flaws and 2 public zero-days. Patch now to prevent RCE and privilege escalation.

Runtime Rebel Intel
3 min read · Mar 11, 2026
Microsoft March Update: 83 CVEs Patched, Prioritization Key
HIGH
Vulnerabilities

Microsoft March Update: 83 CVEs Patched, Prioritization Key

Microsoft's March Patch Tuesday addresses 83 CVEs across its product line. Learn why applying these security updates is crucial for defending against potential…

Runtime Rebel Intel
4 min read · Mar 11, 2026
HIGH
Vulnerabilities

March 2026 Patch Tuesday: Microsoft Fixes 77 Vulnerabilities

Microsoft's March 2026 Patch Tuesday addresses 77 vulnerabilities across Windows and other software. Learn about the risks and how to prioritize patching.

Runtime Rebel Intel
3 min read · Mar 11, 2026