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Citrix on Tuesday released security updates to address multiple flaws in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway) that could be exploited by an attacker to facilitate arbitrary file reads or trigger a denial-of-service (DoS) condition. The vulnerabilities are listed below - CVE-2026-8451 (CVSS score: 8.8) - An insufficient input validation vulnerability leading to memory overread when NetScaler ADC or NetScaler Gateway is configured as a SAML IDP CVE-2026-8452 (CVSS score: 8.8) - A memory overflow vulnerability leading to unpredictable or erroneous behavior and denial-of-service when the appliance is configured as a Gateway or an AAA virtual server CVE-2026-8655 (CVSS score: 8.8) - Multiple memory overflow vulnerabilities leading to unpredictable or erroneous behavior and denial-of-service when NetScaler ADC is configured as an LB of type Oracle, a DNS Proxy, or a DNS recursive resolver deployment CVE-2026-10816 (CVSS sco...

A new two-stage malware family called RustDuck is hijacking home routers, IP cameras, Android boxes, and poorly secured servers, then stitching them into a network built to knock websites and online services offline. Researchers at QiAnXin's XLab have tracked it since February 2026, and say the real story is not how big it is today, but how fast it is changing. The end goal is a distributed denial-of-service (DDoS) attack: flooding a target with junk traffic from the infected machines until it buckles. RustDuck is one more entrant in a crowded field, but it stands out for two reasons. It is being rewritten from the C programming language into Rust, and its newer versions go to unusual lengths to avoid being studied or shut down. How it spreads RustDuck does not lean on a single clever trick. It sprays a mix of old, well-known weaknesses and hopes one sticks. The first is the oldest in the book: devices left on the internet with weak or default passwords on their rem...

Threat actors are continuing to exploit a critical Langflow vulnerability as part of fresh attacks designed to deliver a Monero cryptocurrency miner. The activity has been found to weaponize CVE-2026-33017 (CVSS score: 9.3), an unauthenticated remote code execution (RCE) vulnerability in Langflow, indicating threat actors are scanning and targeting exposed artificial intelligence (AI) application endpoints for obtaining initial access to enterprise networks. The attack was observed over a 19-day window between March 27 and April 15, 2026. "In this campaign, a single line of Python code evaluated inside an unauthenticated Langflow API endpoint pulls down a shell script, fetches a miner binary, and launches it detached," Trend Micro researchers Simon Dulude and John Zhang said in a technical report published last week. At a high level, the malware is designed to terminate competing cryptocurrency miner processes associated with Kinsing , WatchDog , Rocke , and Outlaw ,...

Two researchers have found six security flaws in AirDrop and Quick Share , the wireless features that beam files between nearby devices with no cables or shared network. An attacker within wireless range, with just a laptop and no prior connection, can crash the sharing service on a Mac or iPhone set to receive from anyone, with no tap or prompt. The same research found Quick Share flaws that bypass Samsung's session checks and trigger a potentially exploitable crash in Google's Windows app. The two features run inside an ecosystem of more than five billion active Apple and Android devices, though the tested bugs hit specific implementations and versions. The work, laid out in a  new research paper  by Arash Ale Ebrahim and Nils Ole Tippenhauer of the CISPA Helmholtz Center for Information Security, is the first to pull both stacks apart side by side, above the radio layer, where discovery becomes session handling, parsing, and trust decisions. The fixes have alre...

A critical vulnerability in Progress Kemp LoadMaster can let an unauthenticated attacker execute arbitrary commands as root on the appliance by sending a crafted request to its API. The flaw, tracked as  CVE-2026-8037 , carries a CVSS score of  9.8 according to ZDI . A patch is available. If you run LoadMaster with the API enabled, update now. Progress  published its advisory on June 4  and says it has not received any reports of exploitation. On June 29, researchers at watchTowr Labs published a detailed technical write-up that walks through the full exploit chain. What the Flaw Does LoadMaster is an application delivery controller and load balancer used by enterprises to manage traffic across servers. It sits at the network edge, which makes any pre-auth flaw in it especially dangerous. The vulnerability lives in a function called  escape_quotes() , which is supposed to sanitize user input before it gets passed into a shell command. The f...