Vulnerability | Breaking Cybersecurity News | The Hacker News

Several versions of firmware released by Chinese network device manufacturer Tenda have been found to embed an undocumented authentication backdoor that enables administrative access to the devices' web management interfaces, the CERT Coordination Center (CERT/CC) warned Monday. "An attacker can exploit this vulnerability, tracked as CVE-2026-11405 , to bypass the password verification process and obtain full administrative control without valid credentials," the CERT/CC said in an alert. The vulnerability impacts multiple versions of the firmware - US_FH1201V1.0BR_V1.2.0.14(408)_EN_TD US_W15EV1.0br_V15.11.0.5(1068_1567_841)_EN_TDE US_AC10V1.0re_V15.03.06.46_multi_TDE01 US_AC5V1.0RTL_V15.03.06.48_multi_TDE01 US_AC6V2.0RTL_V15.03.06.51_multi_T The backdoor functionality is present within the "login()" function of the "/bin/httpd" web server binary. While the method initially follows a normal authentication path using MD5-based p...

BeyondTrust has released updates to address two critical security flaws affecting Remote Support (RS) and Privileged Remote Access (PRA) products that, if successfully exploited, could allow unauthenticated attackers to take control of susceptible devices. The vulnerabilities are listed below - CVE-2026-40138 (CVSS score: 9.2) - A pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support and Privileged Remote Access stemming from improper validation of authentication data that could allow a network-positioned attacker to bypass access controls and gain unauthorized access to the appliance, including accounts with elevated privileges. CVE-2026-40139 (CVSS score: 9.2) - A pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support stemming from improper processing of authentication requests that could allow an unauthenticated remote attacker to bypass access controls and gain unauthorized ...

An Iranian hacking group affiliated with Iran's Ministry of Intelligence and Security (MOIS) has been wielding a previously undocumented modular command-and-control (C2) framework dubbed Cavern (aka Cav3rn) targeting Israeli organizations. The activity, which has primarily singled out IT providers and government sectors, has been attributed to a threat cluster tracked by Check Point Research under the moniker Cavern Manticore , which it said shares some level of tactical overlaps with MuddyWater and Lyceum , the latter of which is assessed to be a subgroup within OilRig . "The framework reflects a mature and adaptable toolset built around a shared .NET foundation, while using multiple compilation formats across different components, including .NET Framework, .NET Mixed-Mode C++/CLI, and .NET Native AOT ," the cybersecurity company said . "The compilation format itself becomes the anti-analysis layer that forces reverse engineers into multiple toolsets and me...

A use-after-free bug in Linux's KVM hypervisor can be triggered from a guest virtual machine to corrupt the shadow-page state of the host kernel that runs it. Dubbed ' Januscape ' and tracked as  CVE-2026-53359 , the flaw sits in the shadow MMU code that KVM shares across both Intel and AMD. The public proof-of-concept panics the host; the researcher claims that a separate, unreleased exploit turns the same bug into full host code execution. Security researcher  Hyunwoo Kim (@v4bel) found and reported the bug. He described Januscape as the first guest-to-host exploit triggerable on both Intel and AMD, to the best of public knowledge. The flaw went unnoticed for roughly 16 years. According to Kim, the exploit was used as a zero-day submission in  Google's kvmCTF , the controlled KVM vulnerability reward program that offers up to $250,000 for full guest-to-host escapes. How It Works To run a virtual machine, KVM keeps its own private set of page tables that mi...

Threat actors have been observed attempting to exploit a recently patched critical security flaw in Gitea Docker images, according to Sysdig . The vulnerability in question is CVE-2026-20896 (CVSS score: 9.8), a vulnerability that stems from the DevOps platform trusting the "X-WEBAUTH-USER" header from any source IP address, effectively allowing an unauthenticated internet client to get elevated access. In a statement shared with The Hacker News via email, security researcher Ali Mustafa (@rz1027), who is credited with discovering and reporting the flaw, said the Gitea Docker images shipped an "app.ini" template that hard-codes "REVERSE_PROXY_TRUSTED_PROXIES = *" by default. The " app.ini " file is a core configuration file for managing server parameters, database connections, security behavior, and application settings. "With reverse-proxy login enabled, that wildcard trusts every source IP, so anyone who could reach the port could...