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Cybersecurity researchers have flagged a new variant of a known malware loader called Matanbuchus that packs in significant features to enhance its stealth and evade detection. Matanbuchus is the name given to a malware-as-a-service (MaaS) offering that can act as a conduit for next-stage payloads , including Cobalt Strike beacons and ransomware. First advertised in February 2021 on Russian-speaking cybercrime forums for a rental price of $2,500, the malware has been put to use as part of ClickFix-like lures to trick users visiting legitimate-but-compromised sites not running it. Matanbuchus stands out among loaders because it's not usually spread through spam emails or drive-by downloads. Instead, it's often deployed using hands-on social engineering, where attackers trick users directly. In some cases, it supports the kind of initial access used by brokers who sell entry to ransomware groups. This makes it more targeted and coordinated than typical commodity loaders. The latest...

A threat activity cluster has been observed targeting fully-patched end-of-life SonicWall Secure Mobile Access (SMA) 100 series appliances as part of a campaign designed to drop a backdoor called OVERSTEP . The malicious activity, dating back to at least October 2024, has been attributed by the Google Threat Intelligence Group (GTIG) to a hacking crew it tracks as UNC6148 . The number of known victims is "limited" at this stage. The tech giant assessed with high confidence that the threat actor is "leveraging credentials and one-time password (OTP) seeds stolen during previous intrusions, allowing them to regain access even after organizations have applied security updates." "Analysis of network traffic metadata records suggests that UNC6148 may have initially exfiltrated these credentials from the SMA appliance as early as January 2025." The exact initial access vector used to deliver the malware is currently not known due to the steps taken by the...

Google on Tuesday rolled out fixes for six security issues in its Chrome web browser, including one that it said has been exploited in the wild. The high-severity vulnerability in question is CVE-2025-6558 (CVSS score: 8.8), which has been described as an incorrect validation of untrusted input in the browser's ANGLE and GPU components. "Insufficient validation of untrusted input in ANGLE and GPU in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page," according to the description of the flaw from the NIST's National Vulnerability Database (NVD). ANGLE, short for "Almost Native Graphics Layer Engine," acts as a translation layer between Chrome's rendering engine and device-specific graphics drivers. Vulnerabilities in the module can let attackers escape Chrome's sandbox by abusing low-level GPU operations that browsers usually keep isolated, making this a rare but powerful path...

I had the honor of hosting the first episode of the Xposure Podcast live from Xposure Summit 2025. And I couldn't have asked for a better kickoff panel: three cybersecurity leaders who don't just talk security, they live it. Let me introduce them. Alex Delay , CISO at IDB Bank, knows what it means to defend a highly regulated environment. Ben Mead , Director of Cybersecurity at Avidity Biosciences, brings a forward-thinking security perspective that reflects the innovation behind Avidity's targeted RNA therapeutics. Last but not least, Michael Francess , Director of Cybersecurity Advanced Threat at Wyndham Hotels and Resorts, leads the charge in protecting the franchise. Each brought a unique vantage point to a common challenge: applying Continuous Threat Exposure Management (CTEM) to complex production environments. Gartner made waves in 2023 with a bold prediction: organizations that prioritize CTEM will be three times less likely to be breached by 2026. But here's the kicker -...

Google on Tuesday revealed that its large language model (LLM)-assisted vulnerability discovery framework discovered a security flaw in the SQLite open-source database engine before it could have been exploited in the wild. The vulnerability, tracked as CVE-2025-6965 (CVSS score: 7.2), is a memory corruption flaw affecting all versions prior to 3.50.2. It was discovered by Big Sleep , an artificial intelligence (AI) agent that was launched by Google last year as part of a collaboration between DeepMind and Google Project Zero. "An attacker who can inject arbitrary SQL statements into an application might be able to cause an integer overflow resulting in read off the end of an array," SQLite project maintainers said in an advisory. The tech giant described CVE-2025-6965 as a critical security issue that was "known only to threat actors and was at risk of being exploited." Google did not reveal who the threat actors were. "Through the combination of threa...

In cybersecurity, precision matters—and there's little room for error. A small mistake, missed setting, or quiet misconfiguration can quickly lead to much bigger problems. The signs we're seeing this week highlight deeper issues behind what might look like routine incidents: outdated tools, slow response to risks, and the ongoing gap between compliance and real security. For anyone responsible for protecting systems, the key isn't just reacting to alerts—it's recognizing the larger patterns and hidden weak spots they reveal. Here's a breakdown of what's unfolding across the cybersecurity world this week. ⚡ Threat of the Week NCA Arrests for Alleged Scattered Spider Members — The U.K. National Crime Agency (NCA) announced that four people have been arrested in connection with cyber attacks targeting major retailers Marks & Spencer, Co-op, and Harrods. The arrested individuals include two men aged 19, a third aged 17, and a 20-year-old woman. They were apprehended in the West...

Cybersecurity researchers have discovered a new hacking technique that exploits weaknesses in the eSIM technology used in modern smartphones, exposing users to severe risks. The issues impact the Kigen eUICC card. According to the Irish company's website, more than two billion SIMs in IoT devices have been enabled as of December 2020. The findings come from Security Explorations, a research lab of AG Security Research company. Kigen awarded the company a $30,000 bounty for their report. An eSIM, or embedded SIM, is a digital SIM card that's embedded directly into a device as software installed onto an Embedded Universal Integrated Circuit Card (eUICC) chip. eSIMs allow users to activate a cellular plan from a carrier without the need for a physical SIM card. eUICC software offers the ability to change operator profiles, remote provisioning, and management of SIM profiles. "The eUICC card makes it possible to install the so-called eSIM profiles into the target chi...

NVIDIA is urging customers to enable System-level Error Correction Codes (ECC) as a defense against a variant of a RowHammer attack demonstrated against its graphics processing units (GPUs). "Risk of successful exploitation from RowHammer attacks varies based on DRAM device, platform, design specification, and system settings," the GPU maker said in an advisory released this week. Dubbed GPUHammer , the attacks mark the first-ever RowHammer exploit demonstrated against NVIDIA's GPUs (e.g., NVIDIA A6000 GPU with GDDR6 Memory), causing malicious GPU users to tamper with other users' data by triggering bit flips in GPU memory. The most concerning consequence of this behavior, University of Toronto researchers found, is the degradation of an artificial intelligence (AI) model's accuracy from 80% to less than 1%. RowHammer is to modern DRAMs just like how Spectre and Meltdown are to contemporary CPUs. While both are hardware-level security vulnerabilities, Row...

Fortinet has released fixes for a critical security flaw impacting FortiWeb that could enable an unauthenticated attacker to run arbitrary database commands on susceptible instances. Tracked as CVE-2025-25257, the vulnerability carries a CVSS score of 9.6 out of a maximum of 10.0. "An improper neutralization of special elements used in an SQL command ('SQL Injection') vulnerability [CWE-89] in FortiWeb may allow an unauthenticated attacker to execute unauthorized SQL code or commands via crafted HTTP or HTTPs requests," Fortinet said in an advisory released this week. The shortcoming impacts the following versions - FortiWeb 7.6.0 through 7.6.3 (Upgrade to 7.6.4 or above) FortiWeb 7.4.0 through 7.4.7 (Upgrade to 7.4.8 or above) FortiWeb 7.2.0 through 7.2.10 (Upgrade to 7.2.11 or above) FortiWeb 7.0.0 through 7.0.10 (Upgrade to 7.0.11 or above) Kentaro Kawane from GMO Cybersecurity, who was recently credited with reporting a set of critical flaws in Cisco ...

Cybersecurity researchers have discovered a set of four security flaws in OpenSynergy's BlueSDK Bluetooth stack that, if successfully exploited, could allow remote code execution on millions of transport vehicles from different vendors. The vulnerabilities, dubbed PerfektBlue , can be fashioned together as an exploit chain to run arbitrary code on cars from at least three major automakers, Mercedes-Benz, Volkswagen, and Skoda, according to PCA Cyber Security (formerly PCAutomotive). Outside of these three, a fourth unnamed original equipment manufacturer (OEM) has been confirmed to be affected as well. "PerfektBlue exploitation attack is a set of critical memory corruption and logical vulnerabilities found in OpenSynergy BlueSDK Bluetooth stack that can be chained together to obtain Remote Code Execution (RCE)," the cybersecurity company said . While infotainment systems are often seen as isolated from critical vehicle controls, in practice, this separation depends he...

A recently disclosed maximum-severity security flaw impacting the Wing FTP Server has come under active exploitation in the wild, according to Huntress. The vulnerability, tracked as CVE-2025-47812 (CVSS score: 10.0), is a case of improper handling of null ('\0') bytes in the server's web interface, which allows for remote code execution. It has been addressed in version 7.4.4. "The user and admin web interfaces mishandle '\0' bytes, ultimately allowing injection of arbitrary Lua code into user session files," according to an advisory for the flaw on CVE.org. "This can be used to execute arbitrary system commands with the privileges of the FTP service (root or SYSTEM by default)." What makes it even more concerning is that the flaw can be exploited via anonymous FTP accounts. A comprehensive breakdown of the vulnerability entered the public domain towards the end of June 2025, courtesy of RCE Security researcher Julien Ahrens. Cybersecuri...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a critical security flaw impacting Citrix NetScaler ADC and Gateway to its Known Exploited Vulnerabilities ( KEV ) catalog, officially confirming the vulnerability has been weaponized in the wild. The shortcoming in question is CVE-2025-5777 (CVSS score: 9.3), an instance of insufficient input validation that could be exploited by an attacker to bypass authentication when the appliance is configured as a Gateway or AAA virtual server. It's also called Citrix Bleed 2 owing to its similarities with Citrix Bleed (CVE-2023-4966). "Citrix NetScaler ADC and Gateway contain an out-of-bounds read vulnerability due to insufficient input validation," the agency said. "This vulnerability can lead to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server." CISA pointed out that flaws like CVE-2025-5777 are f...

Cybersecurity researchers have discovered a critical vulnerability in the open-source mcp-remote project that could result in the execution of arbitrary operating system (OS) commands. The vulnerability, tracked as CVE-2025-6514 , carries a CVSS score of 9.6 out of 10.0. "The vulnerability allows attackers to trigger arbitrary OS command execution on the machine running mcp-remote when it initiates a connection to an untrusted MCP server, posing a significant risk to users – a full system compromise," Or Peles, JFrog Vulnerability Research Team Leader, said . Mcp-remote is a tool that sprang forth following Anthropic's release of Model Context Protocol (MCP), an open-source framework that standardizes the way large language model (LLM) applications integrate and share data with external data sources and services. It acts as a local proxy, enabling MCP clients like Claude Desktop to communicate with remote MCP servers, as opposed to running them locally on the same...

Cybersecurity researchers have discovered new artifacts associated with an Apple macOS malware called ZuRu, which is known to propagate via trojanized versions of legitimate software. SentinelOne, in a new report shared with The Hacker News, said the malware has been observed masquerading as the cross‑platform SSH client and server‑management tool Termius in late May 2025. "ZuRu malware continues to prey on macOS users seeking legitimate business tools, adapting its loader and C2 techniques to backdoor its targets," researchers Phil Stokes and Dinesh Devadoss said . ZuRu was first documented in September 2021 by a user on Chinese question-and-answer website Zhihu as part of a malicious campaign that hijacked searches for iTerm2, a legitimate macOS Terminal app, to direct users to fake sites that tricked unsuspecting users into downloading the malware. Then in January 2024, Jamf Threat Labs said it discovered a piece of malware distributed via pirated macOS apps that s...

Semiconductor company AMD is warning of a new set of vulnerabilities affecting a broad range of chipsets that could lead to information disclosure. The flaws, collectively called Transient Scheduler Attacks (TSA), manifest in the form of a speculative side channel in its CPUs that leverage execution timing of instructions under specific microarchitectural conditions. "In some cases, an attacker may be able to use this timing information to infer data from other contexts, resulting in information leakage," AMD said in an advisory. The company said issues were uncovered as part of a study published by Microsoft and ETH Zurich researchers about testing modern CPUs against speculative execution attacks like Meltdown and Foreshadow by stress testing isolation between security domains such as virtual machines, kernel, and processes. Following responsible disclosure in June 2024, the issues have been assigned the below CVE identifiers - CVE-2024-36350 (CVSS score: 5.6) ...

For the first time in 2025, Microsoft's Patch Tuesday updates did not bundle fixes for exploited security vulnerabilities, but the company acknowledged one of the addressed flaws had been publicly known. The patches resolve a whopping 130 vulnerabilities , along with 10 other non-Microsoft CVEs that affect Visual Studio, AMD, and its Chromium-based Edge browser. Of these, 10 are rated Critical and the remaining are all rated Important in severity. "The 11-month streak of patching at least one zero-day that was exploited in the wild ended this month," Satnam Narang, Senior Staff Research Engineer at Tenable, said. Fifty-three of these shortcomings are classified as privilege escalation bugs followed by 42 as remote code execution, 17 as information disclosure, and 8 as security feature bypasses. These patches are in addition to two other flaws addressed by the company in the Edge browser since the release of last month's Patch Tuesday update . The vulnerability ...