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485 result(s) for "Microsoft 365" — best match first.

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The security stories that matter, explained by our team — with the concrete steps to take.

Latest headlines from security outlets

Collected every two hours from specialised publications — each link leads to the original article.

The Hacker News
The Hacker News Vulnerabilities
Microsoft Patches 138 Vulnerabilities, Including DNS and Netlogon RCE Flaws

Microsoft on Tuesday released patches for 138 security vulnerabilities spanning its product portfolio, although none of them have been listed as publicly known…

The Hacker News
The Hacker News Vulnerabilities
Microsoft Issues Patches for SharePoint Zero-Day and 168 Other New Vulnerabilities

Microsoft on Tuesday released updates to address a record 169 security flaws across its product portfolio, including one vulnerability that has been actively e…

Microsoft 365

The Hacker News
The Hacker News Vulnerabilities
Microsoft Patches 59 Vulnerabilities Including Six Actively Exploited Zero-Days

Microsoft on Tuesday released security updates to address a set of 59 flaws across its software, including six vulnerabilities that it said have been exploited…

The Hacker News
The Hacker News Vulnerabilities
APT28 Uses Microsoft Office CVE-2026-21509 in Espionage-Focused Malware Attacks

The Russia-linked state-sponsored threat actor known as APT28 (aka UAC-0001) has been attributed to attacks exploiting a newly disclosed security flaw in Micro…

LinuxSecurity - Security Advisories
LinuxSecurity - Security Advisories Vulnerabilities
Fedora 43: duc Critical Fix for Stack Overflow CVE-2025-13654

Update to 1.4.6: fixes CVE-2025-13654

Linux

The Hacker News
The Hacker News Vulnerabilities
Microsoft Issues Security Fixes for 56 Flaws, Including Active Exploit and Two Zero-Days

Microsoft closed out 2025 with patches for 56 security flaws in various products across the Windows platform, including one vulnerability that has been activel…

Windows

LinuxSecurity - Security Advisories
LinuxSecurity - Security Advisories Vulnerabilities
Debian LTS: Unbound CVE-2025-11411 Important DDoS Risk Fix DLA-4365-2

Yuxiao Wu, Yunyi Zhang, Baojun Liu and Haixin Duan discovered that the initial fix for CVE-2025-11411 as applied in DLA 4365-1 did not fully fix the vulnerabil…

Linux

The Hacker News
The Hacker News Vulnerabilities
Microsoft Fixes 63 Security Flaws, Including a Windows Kernel Zero-Day Under Active Attack

Microsoft on Tuesday released patches for 63 new security vulnerabilities identified in its software, including one that has come under active exploitation in …

Windows

The Hacker News
The Hacker News Vulnerabilities
Microsoft Issues Emergency Patch for Actively Exploited Critical WSUS Vulnerability

Microsoft on Thursday released out-of-band security updates to patch a critical-severity Windows Server Update Service (WSUS) vulnerability with a proof-of-con…

Windows

The Hacker News
The Hacker News Breaches & leaks
Microsoft Links Storm-1175 to GoAnywhere Exploit Deploying Medusa Ransomware

Microsoft on Monday attributed a threat actor it tracks as Storm-1175 to the exploitation of a critical security flaw in Fortra GoAnywhere software to facilita…

LinuxSecurity - Security Advisories
LinuxSecurity - Security Advisories Vulnerabilities
Debian 11: PAM Important DoS and Access Risk CVE-2024-22365 DLA-4306-1

Multiple vulnerabilities were found in PAM namespace module used to configure private namespaces for user sessions. CVE-2024-22365

Linux

The Hacker News
The Hacker News Vulnerabilities
Microsoft Discloses Exchange Server Flaw Enabling Silent Cloud Access in Hybrid Setups

Microsoft has released an advisory for a high-severity security flaw affecting on-premise versions of Exchange Server that could allow an attacker to gain elev…

Exchange

LinuxSecurity - Security Advisories
LinuxSecurity - Security Advisories Vulnerabilities
Fedora 41: Poppler Critical Patch for CVE-2025-32364 and CVE-2025-32365

This update fixes these CVEs: CVE-2025-32364 CVE-2025-32365 CVE-2024-56378

Linux

The Hacker News
The Hacker News Vulnerabilities
Microsoft Releases Urgent Patch for SharePoint RCE Flaw Exploited in Ongoing Cyber Attacks

Microsoft on Sunday released security patches for an actively exploited security flaw in SharePoint and also disclosed details of another vulnerability that it…

Microsoft 365

The Hacker News
The Hacker News Vulnerabilities
nOAuth Vulnerability Still Affects 9% of Microsoft Entra SaaS Apps Two Years After Discovery

New research has uncovered continued risk from a known security weakness in Microsoft's Entra ID, potentially enabling malicious actors to achieve account take…

Microsoft 365

The Hacker News
The Hacker News Vulnerabilities
Microsoft Patches 67 Vulnerabilities Including WEBDAV Zero-Day Exploited in the Wild

Microsoft has released patches to fix 67 security flaws, including one zero-day bug in Web Distributed Authoring and Versioning (WebDAV) that it said has come …

The Hacker News
The Hacker News Vulnerabilities
Microsoft OneDrive File Picker Flaw Grants Apps Full Cloud Access — Even When Uploading Just One File

Cybersecurity researchers have discovered a security flaw in Microsoft's OneDrive File Picker that, if successfully exploited, could allow websites to access a…

The Hacker News
The Hacker News Vulnerabilities
CISA Warns of Suspected Broader SaaS Attacks Exploiting App Secrets and Cloud Misconfigs

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday revealed that Commvault is monitoring cyber threat activity targeting applications…

Microsoft 365 Azure

Latest Hacking News | Cyber Security News, Hacking Tools and Penetration Testing Courses
Latest Hacking News | Cyber Security News, Hacking Tools and Penetration Testing Courses Vulnerabilities
CISA Warns Of Actively Exploited Vulnerability In Microsoft Outlook

Despite the fix being available, the delays in patching devices allowed the threat actors to…CISA Warns Of Actively Exploited Vulnerability In Microsoft Outloo…

Microsoft 365

The Hacker News
The Hacker News Vulnerabilities
Microsoft Uncovers macOS Vulnerability CVE-2024-44243 Allowing Rootkit Installation

Microsoft has shed light on a now-patched security flaw impacting Apple macOS that, if successfully exploited, could have allowed an attacker running as "root"…

Apple

The Hacker News
The Hacker News Vulnerabilities
Microsoft Sues Hacking Group Exploiting Azure AI for Harmful Content Creation

Microsoft has revealed that it's pursuing legal action against a "foreign-based threat–actor group" for operating a hacking-as-a-service infrastructure to inte…

Azure

The Hacker News
The Hacker News Vulnerabilities
Microsoft Fixes 72 Flaws, Including Patch for Actively Exploited CLFS Vulnerability

Microsoft closed out its Patch Tuesday updates for 2024 with fixes for a total of 72 security flaws spanning its software portfolio, including one that it said…

The Hacker News
The Hacker News Vulnerabilities
Microsoft Fixes 90 New Flaws, Including Actively Exploited NTLM and Task Scheduler Bugs

Microsoft on Tuesday revealed that two security flaws impacting Windows NT LAN Manager (NTLM) and Task Scheduler have come under active exploitation in the wil…

Windows

The Hacker News
The Hacker News Breaches & leaks
Researchers Uncover OS Downgrade Vulnerability Targeting Microsoft Windows Kernel

A new attack technique could be used to bypass Microsoft's Driver Signature Enforcement (DSE) on fully patched Windows systems, leading to operating system (OS…

Windows