0day
Microsoft releases emergency patches for SharePoint RCE flaws exploited in 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. In May, during the Berlin Pwn2Own hacking contest, researchers exploited a zero-day vulnerability chain called “ToolShell,” which enabled them to achieve remote code execution in Microsoft SharePoint. These flaws were fixed as part […]
Microsoft SharePoint zero-day exploited in RCE attacks, no patch available
Critical zero-day vulnerabilities in Microsoft SharePoint, tracked as CVE-2025-53770 and CVE-2025-53771, have been actively exploited since at least July 18th, with no patch available and at least 85 servers already compromised worldwide. In May, Viettel Cyber Security researchers chained two Microsoft SharePoint flaws, CVE-2025-49706 and CVE-2025-49704, in a “ToolShell” attack demonstrated at Pwn2Own Berlin to achieve remote code execution. While […]
New CrushFTP zero-day exploited in attacks to hijack servers
CrushFTP is warning that threat actors are actively exploiting a zero-day vulnerability tracked as CVE-2025-54309, which allows attackers to gain administrative access via the web interface on vulnerable servers. CrushFTP is an enterprise file transfer server used by organizations to securely share and manage files over FTP, SFTP, HTTP/S, and other protocols. According to CrushFTP, threat […]
VMware fixes four ESXi zero-day bugs exploited at Pwn2Own Berlin
VMware fixed four vulnerabilities in VMware ESXi, Workstation, Fusion, and Tools that were exploited as zero-days during the Pwn2Own Berlin 2025 hacking contest in May 2025. Three of the patched flaws have a severity rating of 9.3, as they allow programs running in a guest virtual machine to execute commands on the host. These flaws […]
Windows 11 and Red Hat Linux hacked on first day of Pwn2Own
On the first day of Pwn2Own Berlin 2025, security researchers were awarded $260,000 after successfully demonstrating zero-day exploits for Windows 11, Red Hat Linux, and Oracle VirtualBox. Red Hat Enterprise Linux for Workstations was the first to fall in the local privilege escalation category after DEVCORE Research Team’s Pumpkin exploited an integer overflow vulnerability to […]
Ivanti fixes EPMM zero-days chained in code execution attacks
Ivanti warned customers today to patch their Ivanti Endpoint Manager Mobile (EPMM) software against two security vulnerabilities chained in attacks to gain remote code execution. “Ivanti has released updates for Endpoint Manager Mobile (EPMM) which addresses one medium and one high severity vulnerability,” the company said. “When chained together, successful exploitation could lead to unauthenticated remote […]
Hackers exploit VMware ESXi, Microsoft SharePoint zero-days at Pwn2Own
During the second day of Pwn2Own Berlin 2025, competitors earned $435,000 after exploiting zero-day bugs in multiple products, including Microsoft SharePoint, VMware ESXi, Oracle VirtualBox, Red Hat Enterprise Linux, and Mozilla Firefox. The highlight was a successful attempt from Nguyen Hoang Thach of STARLabs SG against the VMware ESXi, which earned him $150,000 for an […]
CISA tags recently patched Chrome bug as actively exploited
On Thursday, CISA warned U.S. federal agencies to secure their systems against ongoing attacks exploiting a high-severity vulnerability in the Chrome web browser. Solidlab security researcher Vsevolod Kokorin discovered the flaw (CVE-2025-4664) and shared technical details online on May 5th. Google released security updates to patch it on Wednesday. As Kokorin explained, the vulnerability is due to insufficient policy enforcement […]
Output Messenger flaw exploited as zero-day in espionage attacks
A Türkiye-backed cyberespionage group exploited a zero-day vulnerability to attack Output Messenger users linked to the Kurdish military in Iraq. Microsoft Threat Intelligence analysts who spotted these attacks also discovered the security flaw (CVE-2025-27920) in the LAN messaging application, a directory traversal vulnerability that can let authenticated attackers access sensitive files outside the intended directory […]
SonicWall urges admins to patch VPN flaw exploited in attacks
SonicWall has urged its customers to patch three security vulnerabilities affecting its Secure Mobile Access (SMA) appliances, one of them tagged as exploited in attacks. Discovered and reported by Rapid7 cybersecurity researcher Ryan Emmons, the three security flaws (CVE-2025-32819, CVE-2025-32820, and CVE-2025-32821) can be chained by attackers to gain remote code execution as root and compromise […]