Authentication Bypass
Fortinet blocks exploited FortiCloud SSO zero day until patch is ready
Fortinet has confirmed a new, actively exploited critical FortiCloud single sign-on (SSO) authentication bypass vulnerability, tracked as CVE-2026-24858, and says it has mitigated the zero-day attacks by blocking FortiCloud SSO connections from devices running vulnerable firmware versions. The flaw allows attackers to abuse FortiCloud SSO to gain administrative access to FortiOS, FortiManager, and FortiAnalyzer devices registered […]
Over 6,000 SmarterMail servers exposed to automated hijacking attacks
Nonprofit security organization Shadowserver has found over 6,000 SmarterMail servers exposed online and likely vulnerable to attacks exploiting a critical authentication bypass vulnerability. Cybersecurity company watchTowr reported the security flaw to developer SmarterTools on January 8, which released a fix on January 15 without assigning an identifier. The vulnerability was later assigned CVE-2026-23760 and rated critical severity, as […]
Nearly 800,000 Telnet servers exposed to remote attacks
Internet security watchdog Shadowserver tracks nearly 800,000 IP addresses with Telnet fingerprints amid ongoing attacks exploiting a critical authentication bypass vulnerability in the GNU InetUtils telnetd server. The security flaw (CVE-2026-24061) impacts GNU InetUtils versions 1.9.3 (released 11 years ago in 2015) through 2.7 and was patched in version 2.8 (released on January 20). “The […]
Hackers exploit critical telnetd auth bypass flaw to get root
A coordinated campaign has been observed targeting a recently disclosed critical-severity vulnerability that has been present in the GNU InetUtils telnetd server for 11 years. The security issue is tracked as CVE-2026-24061 and was reported on January 20. It is trivial to leverage and multiple exploit examples are publicly available. Bug persisted since 2015 Open-source contributor Simon Josefsson explains that the […]
Fortinet confirms critical FortiCloud auth bypass not fully patched
Days after admins began reporting that their fully patched firewalls are being hacked, Fortinet confirmed it’s working to fully address a critical FortiCloud SSO authentication bypass vulnerability that should have already been patched since early December. This comes after a wave of reports from Fortinet customers about threat actors exploiting a patch bypass for the CVE-2025-59718 vulnerability to […]
SmarterMail auth bypass flaw now exploited to hijack admin accounts
Hackers began exploiting an authentication bypass vulnerability in SmarterTools’ SmarterMail email server and collaboration tool that allows resetting admin passwords. An authentication bypass vulnerability in SmarterTools SmarterMail, which allows unauthenticated attackers to reset the system administrator password and obtain full privileges, is now actively exploited in the wild. The issue resides in the force-reset-password API […]
Hackers exploit Modular DS WordPress plugin flaw for admin access
Hackers are actively exploiting a maximum severity flaw in the Modular DS WordPress plugin that allows them to bypass authentication remotely and access the vulnerable sites with admin-level privileges. The flaw, tracked as CVE-2026-23550, affects versions 2.5.1 and older of Modular DS, a management plugin that allows managing multiple WordPress sites from a single interface. The plugin lets […]
Max severity Ni8mare flaw lets hackers hijack n8n servers
A maximum severity vulnerability dubbed “Ni8mare” allows remote, unauthenticated attackers to take control over locally deployed instances of the N8N workflow automation platform. The security issue is identified as CVE-2026-21858 and has a 10 out of 10 severity score. According to researchers at data security company Cyera, there are more than 100,000 vulnerable n8n servers. n8n is an open-source […]
IBM warns of critical API Connect auth bypass vulnerability
IBM urged customers to patch a critical authentication bypass vulnerability in its API Connect enterprise platform that could allow attackers to access apps remotely. API Connect is an application programming interface (API) gateway that enables organizations to develop, test, and manage APIs and provide controlled access to internal services for applications, business partners, and external […]
Hackers exploit newly patched Fortinet auth bypass flaws
Hackers are exploiting critical-severity vulnerabilities affecting multiple Fortinet products to get unauthorized access to admin accounts and steal system configuration files. The two vulnerabilities are tracked as CVE-2025-59718 and CVE-2025-59719, and Fortinet warned in an advisory on December 9 about the potential for exploitation. CVE-2025-59718 is a FortiCloud SSO authentication bypass affecting FortiOS, FortiProxy, and FortiSwitchManager. It is […]