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CVE-2026-42897 stems from a cross-site scripting (XSS) vulnerability and can allow an attacker to compromise Outlook Web Access (OWA) mailboxes.
Chinese Hackers Target European Diplomats with LNK File FlawChinese nation-state hackers are exploiting a Windows vulnerability to hack European diplomatic outposts, say security researchers - but operating system giant Microsoft says the flaw doesn't merit a patch. Hackers used a flaw already compromised by North Korea and Russia.
On Sunday, July 20, Microsoft Corp. issued an emergency security update for a vulnerability in SharePoint Server that is actively being exploited to compromise vulnerable organizations. The patch comes amid reports that malicious hackers have used the Sharepoint flaw to breach U.S. federal and state agencies, universities, and energy companies.
Malicious actors already have already pounced on the zero-day vulnerability, tracked as CVE-2025-53770, to compromise US government agencies and other businesses in ongoing and widespread attacks.
Microsoft has released emergency SharePoint security updates for two zero-day vulnerabilities tracked as CVE-2025-53770 and CVE-2025-53771 that have compromised services worldwide in "ToolShell" attacks. [...]
A critical zero-day vulnerability in Microsoft SharePoint, tracked as CVE-2025-53770, has been actively exploited since at least July 18th, with no patch available and at least 85 servers already compromised worldwide. [...]
UEFI Vulnerability Threatens Systems with Silent CompromiseHackers could circumvent the protections of Secure Boot by silently disabling it through an attack that potentially affects a wide swath of Windows laptops and servers. Microsoft issued a patch this month and hackers would already need admin access and physical access to a target machine.
Putin's pals use 'GooseEgg' malware to launch attacks you can defeat with patches or deletion Russian spies are exploiting a years-old Windows print spooler vulnerability and using a custom tool called GooseEgg to elevate privileges and steal credentials across compromised networks, according to Microsoft Threat Intelligence.…
The notorious Lazarus Group actors exploited a recently patched privilege escalation flaw in the Windows Kernel as a zero-day to obtain kernel-level access and disable security software on compromised hosts
Microsoft on Friday shared guidance to help customers discover indicators of compromise (IoCs) associated with a recently patched Outlook vulnerability
Microsoft today published a detailed guide aiming to help customers discover signs of compromise via exploitation of a recently patched Outlook zero-day vulnerability. [...]
Details have emerged about a now-patched security flaw in Windows Common Log File System (CLFS) that could be exploited by an attacker to gain elevated permissions on compromised machines
Vulnerable internet-facing Microsoft SQL (MS SQL) Servers are being targeted by threat actors as part of a new campaign to deploy the Cobalt Strike adversary simulation tool on compromised hosts