This week, PrintNightmare - Microsoft's Print Spooler vulnerability (CVE-2021-34527) was upgraded from a 'Low' criticality to a 'Critical' criticality. This is due to a Proof of Concept published on GitHub, which attackers could potentially leverage for gaining access to Domain Controllers. As we reported earlier, Microsoft already released a patch in June 2021, but it wasn't … [Read more...] about How to Mitigate Microsoft Print Spooler Vulnerability – PrintNightmare
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SolarWinds Hackers Breach Microsoft Customer Support to Target its Customers
In yet another sign that the Russian hackers who breached SolarWinds network monitoring software to compromise a slew of entities never really went away, Microsoft said the threat actor behind the malicious cyber activities used password spraying and brute-force attacks in an attempt to guess passwords and gain access to its customer accounts. "This recent activity was mostly … [Read more...] about SolarWinds Hackers Breach Microsoft Customer Support to Target its Customers
Microsoft Edge Bug Could’ve Let Hackers Steal Your Secrets for Any Site
Microsoft last week rolled out updates for the Edge browser with fixes for two security issues, one of which concerns a security bypass vulnerability that could be exploited to inject and execute arbitrary code in the context of any website. Tracked as CVE-2021-34506 (CVSS score: 5.4), the weakness stems from a universal cross-site scripting (UXSS) issue that's triggered when … [Read more...] about Microsoft Edge Bug Could’ve Let Hackers Steal Your Secrets for Any Site
New UAF Vulnerability Affecting Microsoft Office to be Patched Today
Four security vulnerabilities discovered in the Microsoft Office suite, including Excel and Office online, could be potentially abused by bad actors to deliver attack code via Word and Excel documents. "Rooted from legacy code, the vulnerabilities could have granted an attacker the ability to execute code on targets via malicious Office documents, such as Word, Excel and … [Read more...] about New UAF Vulnerability Affecting Microsoft Office to be Patched Today
Microsoft Finds ‘BadAlloc’ Flaws Affecting Wide-Range of IoT and OT Devices
Microsoft researchers on Thursday disclosed two dozen vulnerabilities affecting a wide range of Internet of Things (IoT) and Operational Technology (OT) devices used in industrial, medical, and enterprise networks that could be abused by adversaries to execute arbitrary code and even cause critical systems to crash. "These remote code execution (RCE) vulnerabilities cover more … [Read more...] about Microsoft Finds ‘BadAlloc’ Flaws Affecting Wide-Range of IoT and OT Devices
Black Kingdom Ransomware Hunting Unpatched Microsoft Exchange Servers
More than a week after Microsoft released a one-click mitigation tool to mitigate cyberattacks targeting on-premises Exchange servers, the company disclosed that patches have been applied to 92% of all internet-facing servers affected by the ProxyLogon vulnerabilities. The development, a 43% improvement from the previous week, caps off a whirlwind of espionage and malware … [Read more...] about Black Kingdom Ransomware Hunting Unpatched Microsoft Exchange Servers
Microsoft Issues Security Patches for 89 Flaws — IE 0-Day Under Active Attacks
Microsoft plugged as many as 89 security flaws as part of its monthly Patch Tuesday updates released today, including fixes for an actively exploited zero-day in Internet Explorer that could permit an attacker to run arbitrary code on target machines. Of these flaws, 14 are listed as Critical, and 75 are listed as Important in severity, out of which two of the bugs are … [Read more...] about Microsoft Issues Security Patches for 89 Flaws — IE 0-Day Under Active Attacks
Microsoft Issues Patches for In-the-Wild 0-day and 55 Others Windows Bugs
Microsoft on Tuesday issued fixes for 56 flaws, including a critical vulnerability that's known to be actively exploited in the wild. In all, 11 are listed as Critical, 43 are listed as Important, and two are listed as Moderate in severity — six of which are previously disclosed vulnerabilities. The updates cover .NET Framework, Azure IoT, Microsoft Dynamics, Microsoft Edge for … [Read more...] about Microsoft Issues Patches for In-the-Wild 0-day and 55 Others Windows Bugs
Microsoft Says SolarWinds Hackers Accessed Some of Its Source Code
Microsoft on Thursday revealed that the threat actors behind the SolarWinds supply chain attack were able to gain access to a small number of internal accounts and escalate access inside its internal network. The "very sophisticated nation-state actor" used the unauthorized access to view, but not modify, the source code present in its repositories, the company said. "We … [Read more...] about Microsoft Says SolarWinds Hackers Accessed Some of Its Source Code
Microsoft Warns CrowdStrike of Hackers Targeting Azure Cloud Customers
New evidence amidst the ongoing probe into the espionage campaign targeting SolarWinds has uncovered an unsuccessful attempt to compromise cybersecurity firm Crowdstrike and access the company's email. The hacking endeavor was reported to the company by Microsoft's Threat Intelligence Center on December 15, which identified a third-party reseller's Microsoft Azure account to be … [Read more...] about Microsoft Warns CrowdStrike of Hackers Targeting Azure Cloud Customers