exploit
Hackers get $1,262,000 for 98 zero-days at Pwn2Own Ireland
The Pwn2Own Ireland 2026 hacking contest has concluded, with hackers collecting $1,262,000 in rewards after exploiting 98 zero-day flaws. Ikotas Labs security researchers won this year’s Pwn2Own Ireland edition with 42.5 Master of Pwn points and $361,000 earned over the three-day contest after hacking the Samsung Galaxy S26, OpenAI Codex, and the Oracle Autonomous AI […]
New Windows Defender zero-day blocks Microsoft antivirus updates
Over the weekend, security researcher Abdelhamid Naceri (also known as Nightmare Eclipse) released another Microsoft Defender zero-day exploit that blocks antivirus updates. Naceri named it BigDiskBuster and said it is similar to another Defender zero-day known as UnDefend, which he released in April and that allowed standard users to block definition updates. The security researcher added […]
WordPress Click2Shell flaw lets hackers execute PHP on the server
Technical details and a proof-of-concept exploit have been published for a new WordPress cross-site request forgery (CSRF) vulnerability dubbed ‘Click2Shell’ that affects the platform’s Core component. The security problem does not have an official identifier but was addressed last week with the release of WordPress version 7.1.1. It is a pre-authenticated remote code execution chain […]
ShinyHunters hacks Clop leak site, threatens to extort ransomware gang
The ShinyHunters extortion gang breached the Clop (aka Cl0p) ransomware operation’s data leak site, defacing the Tor site and allegedly stealing server data and the private keys for its onion service. The attack began Friday night when ShinyHunters exploited what they claim is an unauthenticated file upload vulnerability in Grav CMS, which they used to upload […]
Cronos blockchain restarts after $74 million Tectonic exploit
The Cronos blockchain network has resumed trading activity after a price-manipulation attack on the Tectonic cryptocurrency lending platform allowed an attacker to borrow $74 million. According to current information, the threat actor artificially inflated the price of Tectonic’s TONIC token by 100 times, then used it as collateral to borrow real assets. The price manipulation happened […]
Hackers target Microsoft SharePoint RCE chain with PoC exploit
Attackers are now targeting a chain of two Microsoft SharePoint vulnerabilities that can allow them to execute arbitrary code on unpatched servers, according to threat intelligence company Defused. The first (tracked as CVE-2026-55040) is an authentication bypass flaw in the JWT token validation pipeline that attackers without privileges can exploit to perform operations as a SharePoint […]
Hackers leverage new Microsoft SharePoint exploit in attacks
A proof-of-concept (PoC) exploit for a critical Microsoft SharePoint vulnerability, published by cybersecurity company Rapid7 on Tuesday, is already being used in attacks. Tracked as CVE-2026-55040, this authentication bypass security flaw in the JWT token validation pipeline can be exploited by attackers without privileges to perform operations as a SharePoint site user or administrator. Microsoft patched […]
Cisco warns of high-severity ClamAV flaws with public exploits
Cisco warned of two high-severity vulnerabilities affecting the Secure Endpoint Connector that allow threat actors to crash the ClamAV scanning process in denial-of-service (DoS) attacks. The security flaws (tracked as CVE-2026-20337 and CVE-2026-20338) were found in the ZIP archive parser of ClamAV (Clam AntiVirus), the open-source and cross-platform engine used to scan files for malware. As Cisco explained […]
vBulletin fixes critical pre-auth RCE flaw with public exploit
A critical vulnerability in the vBulletin forum software allows unauthenticated attackers to execute arbitrary PHP code through template rendering. The security issue is tracked as CVE-2026-61511 and affects vBulletin versions in the 5.x and 6.x branches up to 5.7.5 and 6.2.1, respectively. vBulletin is a PHP-based proprietary forum platform released in 2000 and used by large online […]
New Certighost PoC exploit lets attackers hijack Windows domains
A proof-of-concept exploit for “Certighost,” a Windows Active Directory Certificate Services vulnerability, has been released that can allow authenticated attackers to potentially compromise a Windows domain. Tracked as CVE-2026-54121, the vulnerability was fixed by Microsoft as part of the July 2026 Patch Tuesday security updates. “An authenticated attacker could manipulate attributes associated with a machine account and obtain […]