This Week’s Brief
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- The Hacker News - Google details Turla's new StockStay backdoorthehackernews.com
- Turla group deploys new STOCKSTAY backdoor against Ukraine and ItalySC Media
- Turla group adds more malware to Russia’s espionage efforts against UkraineThe Record (Recorded Future News)
Cisco patches actively exploited SD-WAN zero-day; Fortinet and Check Point vulnerabilities also targeted
Cisco has released security updates for a medium-severity zero-day vulnerability (CVE-2026-20262) in its Catalyst SD-WAN Manager software, which allows authenticated attackers to write arbitrary files and potentially escalate privileges.
Details
- Cisco's SD-WAN zero-day is currently exploited in the wild, requiring urgent mitigation.
- Fortinet and Check Point vulnerabilities have been recently observed under active attack.
- Security agencies have issued advisories and added these flaws to known exploited vulnerability databases.
- Active exploitation of zero-day vulnerabilities poses immediate risk to enterprise networks.
- Prompt patching is critical to prevent privilege escalation and unauthorized access.
- Widespread use of outdated protocols like IKEv1 increases attack surface for VPN products.
Critical Command Execution Vulnerability Patched in Cisco ISE
AUSCERT External Security Bulletin Redistribution ESB-2026.6780 Cisco Webex App Open Redirect Vulnerability 18 June 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: Cisco Webex Publisher: Cisco Systems...
Details
Multiple severe vulnerabilities disclosed in Rockwell Automation and Moxa industrial devices
Several severe security vulnerabilities have been identified and officially fixed in Rockwell Automation products including Logix 5370 & 5570 controllers, CompactLogix controllers, RSLinx software, FLEX I/O EtherNet/IP adapters, and FactoryTalk Analytics PavilionX.
Details
- Official fixes have just been released for these severe vulnerabilities.
- The disclosed CVEs have high CVSS scores indicating significant risk.
- Industrial environments remain attractive targets for attackers exploiting such flaws.
- Industrial control system vulnerabilities can cause operational disruptions and safety risks.
- Exploits targeting these flaws may lead to denial-of-service or unauthorized control of critical infrastructure.
- Prompt patching is essential to maintain industrial network security and prevent potential attacks.
China-linked UNC6508 group targets North American medical research with InfiniteRed malware
A China-affiliated espionage group known as UNC6508 has been conducting a prolonged cyber campaign against North American medical, academic, and military research institutions.
Details
- The threat actor remained undetected for over a year, emphasizing stealthy espionage tactics.
- Recent disruption by Google and partners reveals ongoing risks to research institutions.
- Exploitation of REDCap servers and Google Workspace rules shows evolving attack vectors.
- The campaign targets sensitive medical and defense research critical to national security.
- Exfiltration methods abusing legitimate enterprise tools complicate detection and response.
- Disruption and remediation efforts highlight the importance of threat intelligence collaboration.
Microsoft confirms RoguePlanet zero-day in Defender, patch in development
Microsoft has disclosed a critical zero-day vulnerability in Microsoft Defender antivirus, tracked as CVE-2026-50656 and dubbed RoguePlanet.
Details
- The zero-day was publicly disclosed recently, increasing the urgency for a fix.
- Proof-of-concept exploits are already circulating, raising the risk of active attacks.
- Microsoft has confirmed the issue and is actively developing a patch, signaling imminent remediation.
- The vulnerability allows attackers to escalate privileges to system level, risking full control over affected machines.
- Microsoft Defender is widely deployed, so the flaw potentially impacts a large number of users and organizations.
- Prompt patching is critical to prevent exploitation given the availability of public proof-of-concept code.
DragonForce ransomware hides command-and-control traffic in Microsoft Teams
The DragonForce ransomware group has been using a sophisticated technique to conceal its command-and-control (C2) communications within legitimate Microsoft Teams traffic.
Details
- Recent discovery highlights ongoing stealthy ransomware campaigns targeting major companies.
- New techniques exploiting popular collaboration tools pose fresh challenges for defenders.
- Concurrent North Korean campaigns using Microsoft alert impersonations emphasize persistent threats.
- Hiding C2 traffic in legitimate Microsoft Teams communications complicates detection and incident response.
- DragonForce's use of custom backdoors shows increasing sophistication in ransomware operations.
- Microsoft-themed phishing remains a favored vector for state-sponsored malware delivery.
Crypto clipper campaign uses fake reputation and Tor-based persistence to evade detection
Since early 2026, a sophisticated Windows-based cryptocurrency clipboard hijacker campaign has employed multiple deceptive tactics to boost legitimacy and evade detection.
Details
- The malware has been active since early 2026 with recent detailed analyses revealing sophisticated tactics.
- Fake reputation manipulation on platforms like VirusTotal is a growing trend in malware campaigns.
- Understanding this campaign aids defenders in improving detection and response strategies.
- Fake reputation tactics complicate detection by users and automated systems.
- Tor-based command-and-control infrastructure evades traditional IP monitoring.
- Behavioral indicators are crucial for identifying and mitigating this stealthy clipboard hijacker.
Multiple important security updates released for Linux kernel and related software
On June 16-17, 2026, coordinated security advisories were published addressing numerous vulnerabilities in the Linux kernel, kernel-rt, 389-ds, openssl-1_1, opensc, qemu, libcaca, openvswitch, sqlite3, and other components primarily for SUSE and Red Hat operating systems.
Details
- Multiple advisories released simultaneously indicating coordinated disclosure.
- High CVSS scores highlight urgency for applying patches.
- Recent fixes include both kernel-level and user-space software vulnerabilities.
- Linux kernel and critical system components are widely deployed; vulnerabilities pose significant risk.
- Timely patching reduces exposure to remote code execution and denial of service attacks.
- Coordinated updates across major distributions enhance overall ecosystem security.
Multiple critical security updates issued for Linux kernel, OpenSSL, Firefox, and Drupal
On June 17-18, 2026, several major security advisories were published addressing critical vulnerabilities across widely used software including the Linux kernel (SUSE, Ubuntu), OpenSSL, Firefox, Drupal Core, OpenShift Container Platform, and others.
Details
- Multiple advisories released simultaneously indicate coordinated disclosure.
- Some vulnerabilities are listed in CISA Known Exploited Vulnerabilities catalog.
- Patch availability enables immediate mitigation of high-risk flaws.
- These vulnerabilities affect critical infrastructure and widely used software, risking system compromise.
- High CVSS scores indicate severe impact potential if exploited.
- Timely patching is essential to prevent exploitation and maintain security.
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