CVE-2026-21638

A malicious actor in Wi-Fi range of the affected product could leverage a vulnerability in the airMAX Wireless Protocol to achieve a remote code execution RCE within the affected product. Affected Products: UBB-XG Version 1.2.2 and earlier UDB-Pro/UDB-Pro-Sector Version 1.4.1 and earlier UBB...

PT-2026-2073

Name of the Vulnerable Software and Affected Versions UBB-XG versions 1.2.2 and earlier UDB-Pro/UDB-Pro-Sector versions 1.4.1 and earlier UBB versions 3.1.5 and earlier Description A malicious actor within Wi-Fi range of the affected product could exploit a flaw in the airMAX Wireless Protocol to...

The Ghost in the Machine: Unmasking CrazyHunter's Stealth Tactics

The Ghost in the Machine: Unmasking CrazyHunter's Stealth Tactics By Aswath A · January 6, 2026 CrazyHunter ransomware has emerged as a significant and concerning threat, highlighting the increasing sophistication of cybercriminal tactics. Trellix has been actively tracking this ransomware since...

Security in the Era of Perceptive Networks: A Comprehensive Taxonomic Framework for Integrated Sensing and Communication Security

Integrated Sensing and Communication ISAC represents a significant shift in the 6G landscape, where wireless networks both sense the environment and communicate. While prior comprehensive surveys have established foundational elements of ISAC security, discussed perception-focused security models...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-992958)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992958 advisory. In the Linux kernel, the following vulnerability has been resolved: mtd: inftlcore: Add error check for inftlreadoob In INFTLfindwriteunit, the return value of...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992677)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992677 advisory. In the Linux kernel, the following vulnerability has been resolved: mtd: inftlcore: Add error check for inftlreadoob In INFTLfindwriteunit, the return value of...

Threat landscape for industrial automation systems in Q3 2025

Statistics across all threats In Q3 2025, the percentage of ICS computers on which malicious objects were blocked decreased from the previous quarter by 0.4 pp to 20.1%. This is the lowest level for the observed period. Percentage of ICS computers on which malicious objects were blocked, Q3 2022–...

Russia-Linked Hackers Use Microsoft 365 Device Code Phishing for Account Takeovers

A suspected Russia-aligned group has been attributed to a phishing campaign that employs device code authentication workflows to steal victims' Microsoft 365 credentials and conduct account takeover attacks. The activity, ongoing since September 2025, is being tracked by Proofpoint under the...

Phantom Stealer Spread by ISO Phishing Emails Hitting Russian Finance Sector

Cybersecurity researchers have disclosed details of an active phishing campaign that's targeting a wide range of sectors in Russia with phishing emails that deliver Phantom Stealer via malicious ISO optical disc images. The activity, codenamed Operation MoneyMount-ISO by Seqrite Labs, has primari...

Fake Microsoft Teams and Google Meet Downloads Spread Oyster Backdoor

The Oyster backdoor also known as Broomstick is targeting the financial world, using malicious search ads for PuTTY, Teams, and Google Meet...

Cybersecurity Performance Goals 2.0 for Critical Infrastructure

Today, CISA released updated Cross-Sector Cybersecurity Performance Goals CPG 2.0 with measurable actions for critical infrastructure owners and operators to achieve a foundational level of cybersecurity. This update incorporates lessons learned, aligns with the most recent National Institute of...

STAC6565 Targets Canada in 80% of Attacks as Gold Blade Deploys QWCrypt Ransomware

Canadian organizations have emerged as the focus of a targeted cyber campaign orchestrated by a threat activity cluster known as STAC6565. Cybersecurity company Sophos said it investigated almost 40 intrusions linked to the threat actor between February 2024 and August 2025. The campaign is...

Active Exploitation of 7-Zip RCE Vulnerability Shows Why Manual Patching is No Longer an Option

A critical remote code execution RCE vulnerability in 7-Zip CVE-2025-11001 is now being actively exploited. The issue stems from improper handling of symbolic links within crafted ZIP files. When a malicious archive is extracted, 7-Zip may write files outside the intended directory, allowing an...

PRC State-Sponsored Actors Use BRICKSTORM Malware Across Public Sector and Information Technology Systems

The Cybersecurity and Infrastructure Security Agency CISA is aware of ongoing intrusions by People’s Republic of China PRC state-sponsored cyber actors using BRICKSTORM malware for long-term persistence on victim systems. BRICKSTORM is a sophisticated backdoor for VMware vSphere1,2 and Windows...

Qilin Ransomware Turns South Korean MSP Breach Into 28-Victim 'Korean Leaks' Data Heist

South Korea's financial sector has been targeted by what has been described as a sophisticated supply chain attack that led to the deployment of Qilin ransomware. "This operation combined the capabilities of a major Ransomware-as-a-Service RaaS group, Qilin, with potential involvement from North...

Zero-Day Zero: The AI Attack That Just Ended the Era of the Forgiving Internet

Why the Exploit Window Has Collapsed and How CISOs Must Pivot to Survive For decades, cybersecurity was a game of time. We banked on the buffer between a vulnerability’s disclosure and its widespread exploitation. We relied on the forgiving internet, where human attackers needed days or weeks to...

EdgeStepper Implant Reroutes DNS Queries to Deploy Malware via Hijacked Software Updates

The threat actor known as PlushDaemon has been observed using a previously undocumented Go-based network backdoor codenamed EdgeStepper to facilitate adversary-in-the-middle AitM attacks. EdgeStepper "redirects all DNS queries to an external, malicious hijacking node, effectively rerouting the...

5 Reasons Why Attackers Are Phishing Over LinkedIn

Phishing attacks are no longer confined to the email inbox, with 1 in 3 phishing attacks now taking place over non-email channels like social media, search engines, and messaging apps. LinkedIn in particular has become a hotbed for phishing attacks, and for good reason. Attackers are running...

An Evaluation Framework for Network IDS/IPS Datasets: Leveraging MITRE ATT&CK and Industry Relevance Metrics

The performance of Machine Learning ML and Deep Learning DL-based Intrusion Detection and Prevention Systems IDS/IPS is critically dependent on the relevance and quality of the datasets used for training and evaluation. However, current AI model evaluation practices for developing IDS/IPS focus...

Threat Landscape of the Building and Construction Sector Part Two: Ransomware

In this second installment of our two-part series on the construction industry, Rapid7 is looking at the specific threat ransomware poses, why the industry is particularly vulnerable, and ways in which threat actors exploit its weaknesses to great effect. You can catch up on the first part here:...