Vulnerability | Breaking Cybersecurity News | The Hacker News

Palo Alto Networks has disclosed that threat actors may have attempted to unsuccessfully exploit a recently disclosed critical security flaw as early as April 9, 2026. The vulnerability in question is CVE-2026-0300 (CVSS score: 9.3/8.7), a buffer overflow vulnerability in the User-ID Authentication Portal service of Palo Alto Networks PAN-OS software that could allow an unauthenticated attacker to execute arbitrary code with root privileges by sending specially crafted packets. While fixes are expected to be released starting May 13, 2026, customers are advised to secure access to the PAN-OS User-ID Authentication Portal by restricting access to trusted zones, or by disabling it entirely if it's not used. In an advisory issued Wednesday, the network security company said it's aware of limited exploitation of the flaw. It's tracking the activity under the CL-STA-1132 , a suspected state-sponsored threat cluster of unknown provenance. "The attacker behind this act...

Bad week. Turns out the easiest way to get hacked in 2026 is still the same old garbage: shady packages, fake apps, forgotten DNS junk, scam ads, and stolen logins getting dumped into Discord channels like it’s normal. Some of these attack chains don’t even feel sophisticated anymore. More like some tired guy with a Telegram account and too much free time. The worst part is how often this stuff still works. Meanwhile, AI tools are speeding up exploit hunting, browsers are keeping passwords sitting in memory for “performance reasons,” and even ransomware crews are pushing broken builds into the wild. Everybody’s scrambling to patch faster because attackers are automating faster. Anyway. ThreatsDay’s rough this week. Let’s get into it. Credential theft campaign New MicroStealer Spotted A new stealer called MicroStealer has been observed targeting education and telecom sectors to steal sensitive data. It was first observed in the wild in...

A dozen critical security vulnerabilities have been disclosed in the vm2 Node.js library that could be exploited by bad actors to break out of the sandbox and execute arbitrary code on susceptible systems. vm2 is an open-source library used to run untrusted JavaScript code inside a secure sandbox by intercepting and proxying JavaScript objects to prevent sandboxed code from accessing the host environment. The security flaws are listed below - CVE-2026-24118 (CVSS score: 9.8) - A vulnerability that allows sandbox escape via "__lookupGetter__" and permits an attacker to run arbitrary code on the underlying host. (Affects versions <= 3.10.4, patches in 3.11.0) CVE-2026-24120 (CVSS score: 9.8) - A patch bypass for CVE-2023-37466 (CVSS score: 9.8) that could allow attackers to escape the sandbox through the species property of promise objects and execute arbitrary commands on the underlying host. (Affects versions <= 3.10.3, patched in 3.10.5) CVE-2026-24781 (CVSS ...

Cybersecurity researchers have exposed a new Mirai -derived botnet that self-identifies as xlabs_v1 and targets internet-exposed devices running Android Debug Bridge ( ADB ) to enlist them in a network capable of carrying out distributed denial-of-service (DDoS) attacks. Hunt.io, which detailed the malware, said it made the discovery after identifying an exposed directory on a Netherlands-hosted server at the IP address "176.65.139[.]44" without requiring any authentication. The malware supports "21 flood variants across TCP, UDP, and raw protocols, including RakNet and OpenVPN-shaped UDP, capable of bypassing consumer-grade DDoS protection," Hunt.io said, adding it's offered as a DDoS-for-hire service designed for targeting game servers and Minecraft hosts. What makes xlabs_v1 notable is that it seeks out Android devices running an exposed ADB service on TCP port 5555, meaning any gear that comes with the tool enabled by default, such as Android TV boxes,...

Palo Alto Networks has released an advisory warning that a critical buffer overflow vulnerability in its PAN-OS software has been exploited in the wild. The vulnerability, tracked as CVE-2026-0300 , has been described as a case of unauthenticated remote code execution. It carries a CVSS score of 9.3 if the User-ID Authentication Portal is configured to enable access from the internet or any untrusted network. The severity comes down to 8.7 if access to the portal is restricted to only trusted internal IP addresses. "A buffer overflow vulnerability in the User-ID Authentication Portal (aka Captive Portal) service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets," the company said . According to Palo Alto Networks, the vulnerability has come under "limited exploitation," specifically targeting instances where the Use...