Microsoft Office Zero-Day (CVE-2026-21509) – Emergency Patch Issued for Active Exploitation

Ravie LakshmananJan 27, 2026Zero-Day / Vulnerability Microsoft on Monday issued out-of-band security patches for a high-severity Microsoft Office zero-day vulnerability exploited in attacks. The vulnerability, tracked as CVE-2026-21509, carries a CVSS score of 7.8 out of 10.0. It has been described as a security feature bypass in Microsoft Office. “Reliance on untrusted inputs in a … Read more

Fake DocuSign, Gitcode Sites Spread NetSupport RAT via Multi-Stage PowerShell Attack

Jun 03, 2025Ravie LakshmananUnited States Threat hunters are alerting to a new campaign that employs deceptive websites to trick unsuspecting users into executing malicious PowerShell scripts on their machines and infect them with the NetSupport RAT malware. The DomainTools Investigations (DTI) team said it identified “malicious multi-stage downloader Powershell scripts” hosted on lure websites that … Read more

New Chrome Zero-Day Actively Exploited; Google Issues Emergency Out-of-Band Patch

Jun 03, 2025Ravie LakshmananBrowser Security / Vulnerability Google on Monday released out-of-band fixes to address three security issues in its Chrome browser, including one that it said has come under active exploitation in the wild. The high-severity flaw is being tracked as CVE-2025-5419, and has been flagged as an out-of-bounds read and write vulnerability in … Read more

Preinstalled Apps on Ulefone, Krüger&Matz Phones Let Any App Reset Device, Steal PIN

Jun 02, 2025Ravie LakshmananMobile Security / Vulnerability Three security vulnerabilities have been disclosed in preloaded Android applications on smartphones from Ulefone and Krüger&Matz that could enable any app installed on the device to perform a factory reset and encrypt an application. A brief description of the three flaws is as follows – CVE-2024-13915 (CVSS score: … Read more

Microsoft Patches 126 Flaws Including Actively Exploited Windows CLFS Vulnerability

Apr 09, 2025Ravie LakshmananEndpoint Security / Vulnerability Microsoft has released security fixes to address a massive set of 126 flaws affecting its software products, including one vulnerability that it said has been actively exploited in the wild. Of the 126 vulnerabilities, 11 are rated Critical, 112 are rated Important, and two are rated Low in … Read more

Ongoing Cyber Attacks Exploit Critical Vulnerabilities in Cisco Smart Licensing Utility

Mar 21, 2025Ravie LakshmananCyber Attack / Vulnerability Two now-patched security flaws impacting Cisco Smart Licensing Utility are seeing active exploitation attempts, according to SANS Internet Storm Center. The two critical-rated vulnerabilities in question are listed below – CVE-2024-20439 (CVSS score: 9.8) – The presence of an undocumented static user credential for an administrative account that … Read more

Moxa Issues Fix for Critical Authentication Bypass Vulnerability in PT Switches

Mar 11, 2025Ravie LakshmananICS Security / Vulnerability Taiwanese company Moxa has released a security update to address a critical security flaw impacting its PT switches that could permit an attacker to bypass authentication guarantees. The vulnerability, tracked as CVE-2024-12297, has been assigned a CVSS v4 score of 9.2 out of a maximum of 10.0. “Multiple … Read more