Latest cybersecurity reporting from selected sources.

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 unknown threat actor has been observed exploiting a recently disclosed maximum-severity security flaw in SimpleHelp to deliver two previously unreported malware families, TaskWeaver and Djinn Stealer

Threat actors are exploiting a recently patched security flaw impacting Gravity SMTP, a WordPress plugin that's installed on about 100,000 sites

Breaches don't always start with a zero-day. An exposed admin panel can get brute-forced, or credentials reused from a previous attack. But when a vulnerability does drop — like MongoBleed earlier this year, which let attackers pull credentials and session tokens from server memory without authentication — anything internet-facing is immediately at risk

Palo Alto Networks warns that attackers are actively exploiting CVE-2026-0257, a PAN-OS flaw that lets unauthorized users bypass authentication and establish VPN connections. Palo Alto Networks has confirmed active exploitation of CVE-2026-0257, a PAN-OS authentication bypass vulnerability affecting GlobalProtect portals and gateways. Palo Alto Networks addressed the vulnerability on May 13. Two weeks later, cybersecurity firm Rapid7 […]

Cisco patched a critical Unified CM flaw with public PoC code that allows unauthenticated attackers to launch SSRF attacks remotely. Cisco has addressed a high-severity vulnerability, tracked as CVE-2026-20230, affecting Unified CM and Unified CM SME. The flaw, caused by improper validation of certain HTTP requests, allows a remote attacker without authentication to perform server-side […]

A security researcher has released exploit code for a Visual Studio Code (VS Code) zero-day vulnerability that allows attackers to steal GitHub authentication tokens by tricking users into clicking a link. [...]

Hackers are exploiting an authentication bypass vulnerability (CVE-2026-35616) in FortiClient Enterprise Management Server (EMS) to deliver an undocumented credential stealer called EKZ. [...]

Cisco has rolled out updates for a maximum-severity security flaw impacting Secure Workload that could allow an unauthenticated, remote attacker to access sensitive data

The U.S.Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a newly disclosed vulnerability impacting Cisco Catalyst SD-WAN Controller to its Known Exploited Vulnerabilities (KEV) catalog, requiring Federal Civilian Executive Branch (FCEB) agencies to remediate the issue by May 17, 2026

Hackers are leveraging a critical authentication bypass vulnerability in the WordPress plugin Burst Statistics to obtain admin-level access to websites. [...]

Threat actors have been observed attempting to exploit a recently disclosed security vulnerability in PraisonAI, an open-source multi-agent orchestration framework, within four hours of its public disclosure

A threat actor named Mr_Rot13 has been attributed to the exploitation of a recently disclosed critical cPanel flaw to deploy a backdoor codenamed Filemanager on compromised environments

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

Shortly after the authentication-bypass flaw was disclosed multiple proof-of-concept exploits appeared, and one researcher claims there's been zero-day activity for at least a month.

Hackers are exploiting two authentication bypass vulnerabilities in the Qinglong open-source task scheduling tool to deploy cryptominers on developers' servers. [...]

Hackers are actively exploiting a critical vulnerability in the Breeze Cache plugin for WordPress that allows uploading arbitrary files on the server without authentication. [...]

A critical vulnerability in the Ninja Forms File Uploads premium add-on for WordPress allows uploading arbitrary files without authentication, which can lead to remote code execution. [...]

Sophisticated Voice Phishing Campaigns Don't Exploit Any Software VulnerabilitiesAmidst persistent voice phishing campaigns designed to trick employees and steal sensitive corporate data, security experts recommend organizations deploy phishing-resistant multifactor authentication, monitor for attacks and use "live video verification" to safeguard authentication changes.

Telnet Flaw Allows Unauthenticated Users to Gain Root AccessHackers are on the hunt for open telnet ports in servers after discovering that a version of legacy client-server application protocol is vulnerable to an authentication bypass vulnerability. More than 800,000 servers could be actively targeted in the wild.