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Microsoft Fixes 134 Vulnerabilities, Including 1 Zero-Day
Microsoft CEO Satya Nadella. Image: Microsoft News Microsoft’s Patch Tuesday security update for April included 134 flaws, one of which is an actively exploited zero-day flaw. The security patches for Windows 10 were unavailable when the Windows 11 patches were released. The Windows 10 patches have since arrived, but the delay was unusual. Tyler Reguly, associate director of security R&D…
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Windows CLFS zero-day exploited by ransomware gang
Microsoft says the RansomEXX ransomware gang has been exploiting a high-severity zero-day flaw in the Windows Common Log File System to gain SYSTEM privileges on victims’ systems. The vulnerability, tracked as CVE-2025-29824, was patched during this month’s Patch Tuesday and was only exploited in a limited number of attacks. CVE-2025-29824 is due to a use-after-free weakness that lets local attackers…
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Ivanti patches Connect Secure zero-day exploited since mid-March
Ivanti has released security updates to patch a critical Connect Secure remote code execution vulnerability exploited by a China-linked espionage actor to deploy malware since at least mid-March 2025. Tracked as CVE-2025-22457, this critical security flaw is due to a stack-based buffer overflow weakness. It impacts Pulse Connect Secure 9.1x (which reached end-of-support in December), Ivanti Connect Secure 22.7R2.5 and…
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EncryptHub linked to MMC zero-day attacks on Windows systems
A threat actor known as EncryptHub has been linked to Windows zero-day attacks exploiting a Microsoft Management Console vulnerability patched this month. Uncovered by Trend Micro staff researcher Aliakbar Zahravi, this security feature bypass (dubbed ‘MSC EvilTwin’ and now tracked as CVE-2025-26633) resides in how MSC files are handled on vulnerable devices. Attackers can leverage the vulnerability to evade Windows…
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Apple fixes WebKit zero-day exploited in ‘extremely sophisticated’ attacks
Apple has released emergency security updates to patch a zero-day bug the company describes as exploited in “extremely sophisticated” attacks. The vulnerability is tracked as CVE-2025-24201 and was found in the WebKit cross-platform web browser engine used by Apple’s Safari web browser and many other apps and web browsers on macOS, iOS, Linux, and Windows. “This is a supplementary fix…
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Critical Zero-Day Vulnerabilities Found in These VMware Products
Broadcom has patched three actively exploited zero-day vulnerabilities in VMware ESXi, Workstation, and Fusion, discovered by Microsoft’s Threat Intelligence Center. The flaws, which were being leveraged in real-world attacks at the time of discovery, could allow attackers with administrator or root access to a virtual machine to breach the underlying hypervisor, potentially exposing all connected VMs and sensitive data. How…
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Serbian police used Cellebrite zero-day hack to unlock Android phones
Serbian authorities have reportedly used an Android zero-day exploit chain developed by Cellebrite to unlock the device of a student activist in the country and attempt to install spyware. Cellebrite is an Israeli digital forensics company that develops tools used by law enforcement, intelligence agencies, and private companies to extract data from smartphones and other digital devices. Companies like Cellebrite commonly…
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Microsoft fixes Power Pages zero-day bug exploited in attacks
Microsoft has issued a security bulletin for a high-severity elevation of privilege vulnerability in Power Pages, which hackers exploited as a zero-day in attacks. The flaw, tracked as CVE-2025-24989, is an improper access control problem impacting Power Pages, allowing unauthorized actors to elevate their privileges over a network and bypass user registration controls. Microsoft says it has addressed the risk at…
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PostgreSQL flaw exploited as zero-day in BeyondTrust breach
Rapid7’s vulnerability research team says attackers exploited a PostgreSQL security flaw as a zero-day to breach the network of privileged access management company BeyondTrust in December. BeyondTrust revealed that attackers breached its systems and 17 Remote Support SaaS instances in early December using two zero-day bugs (CVE-2024-12356 and CVE-2024-12686) and a stolen API key. Less than one month later, in…
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Patch Tuesday: Microsoft Patches Two Actively Exploited Zero-Day Flaws
The monthly report is relatively lightweight, with some mobile updates or fixes that have already been performed server-side and shouldn’t be a concern to admins, said Tyler Reguly, associate director of security R&D at global cybersecurity software and services provider Fortra. Another vulnerability impacts only Microsoft Surface hardware. February update patches two exploited vulnerabilities The two exploited vulnerabilities are: CVE-2025-21391,…
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