Microsoft discloses unpatched Office flaw that exposes NTLM hashes

Update with further information from Microsoft.​ Microsoft has disclosed a high-severity vulnerability affecting Office 2016 that could expose NTLM hashes to a remote attacker. Tracked as CVE-2024-38200, this security flaw is caused by an information disclosure weakness that enables unauthorized actors to access protected information. It impacts multiple 32-bit and 64-bit Office versions, including Office 2016, […]

Microsoft discloses Office zero-day, still working on a patch

​Microsoft has disclosed a high-severity zero-day vulnerability affecting Office 2016 and later, which is still waiting for a patch. Tracked as CVE-2024-38200, this security flaw is caused by an information disclosure weakness that enables unauthorized actors to access protected information such as system status or configuration data, personal info, or connection metadata. The zero-day impacts […]

Windows Update downgrade attack “unpatches” fully-updated systems

SafeBreach security researcher Alon Leviev revealed at Black Hat 2024 that two zero-days could be exploited in downgrade attacks to “unpatch” fully updated Windows 10, Windows 11, and Windows Server systems and reintroduce old vulnerabilities. Microsoft issued advisories on the two unpatched zero-days (tracked as CVE-2024-38202 and CVE-2024-21302) in coordination with the Black Hat talk, […]

Windows Smart App Control, SmartScreen bypass exploited since 2018

A design flaw in Windows Smart App Control and SmartScreen that enables attackers to launch programs without triggering security warnings has been under exploitation since at least 2018. Smart App Control is a reputation-based security feature that uses Microsoft’s app intelligence services for safety predictions and Windows’ code integrity features to identify and block untrusted (unsigned) […]

New Specula tool uses Outlook for remote code execution in Windows

Microsoft Outlook can be turned into a C2 beacon to remotely execute code, as demonstrated by a new red team post-exploitation framework named “Specula,” released today by cybersecurity firm TrustedSec. This C2 framework works by creating a custom Outlook Home Page using WebView by exploiting CVE-2017-11774, an Outlook security feature bypass vulnerability patched in October 2017. […]

Microsoft: Ransomware gangs exploit VMware ESXi auth bypass in attacks

Microsoft warned today that ransomware gangs are actively exploiting a VMware ESXi authentication bypass vulnerability in attacks. Tracked as CVE-2024-37085, this medium-severity security flaw was discovered by Microsoft security researchers Edan Zwick, Danielle Kuznets Nohi, and Meitar Pinto and fixed with the release of ESXi 8.0 U3 on June 25. The bug enables attackers to […]