Weekly Threat Briefing — 2026-07-13 to 2026-07-20
39 findings160 articles6 sections
- Critical findings
- 0
- High findings
- 0
- CISA KEV additions
- 0
- First seen in this period
- 160 Articles1,692 CVEs7,565 IOCs
First seen in this period: news articles, each counted once · CVEs rated CVSS 7.0+ (NVD, GitHub, WordPress) · CISA KEV catalog additions · new abuse.ch indicators (ThreatFox, URLhaus, Feodo Tracker), dated by abuse.ch.
Priority queue
Act on these first
Critical and high findings from this briefing and its live updates. Most severe first, then newest.
- Critical severitySection VulnerabilitiesSource: KEV
- Critical severitySection VulnerabilitiesSource: KEV
- Critical severitySection VulnerabilitiesSource: RSS
- Critical severitySection VulnerabilitiesSource: RSS
- Critical severitySection VulnerabilitiesSource: CVE
- Critical severitySection VulnerabilitiesSource: Blog
- Critical severitySection MalwareSource: RSS
- Critical severitySection Data Breaches & LeaksSource: Breach
- Critical severitySection Data Breaches & LeaksSource: Breach
- Critical severitySection Data Breaches & LeaksSource: Breach
Executive summary · as of 07:02 UTC
The situation
This week's threat landscape is marked by critical remote code execution vulnerabilities across widely deployed platforms, including WordPress Core 'wp2shell' flaws with public exploits, 7-Zip RCE vulnerabilities, and SonicWall SMA zero-days actively exploited by Inc Ransomware. CISA has mandated immediate patching of actively exploited Fortinet FortiSandbox vulnerabilities by government agencies. The period saw a surge in ACR Stealer campaigns targeting enterprise customers to harvest browser credentials and authentication tokens, while new macOS malware ClickLock employs process termination tactics to force password disclosure.
Ransomware activity remains aggressive with 30 new victim postings across multiple groups including Qilin, Nova, and Doommageddon, targeting sectors from healthcare (Abbott Laboratories) to critical infrastructure (Colombian oil giant Ecopetrol, Indonesian maritime ministry). A massive credential exposure affects 23+ million Paidwork users. Notable infrastructure threats include sophisticated supply chain attacks abusing ViPNet software update mechanisms to target Russian government agencies, and North Korean threat actors deploying malware via fake coding interview processes using SVG steganography that evaded all antivirus detection.
Emerging attack techniques include abuse of AI agent frameworks (Claude Chrome extension vulnerabilities, agentic AI security gaps), OpenSSL's HollowByte DoS flaw requiring only 11 bytes to trigger memory exhaustion, and a Windows LegacyHive zero-day granting admin privileges. Organizations should prioritize patching critical KEV entries, implement enhanced monitoring for ACR Stealer indicators, review AI agent security controls, and validate software supply chain integrity.
Browse the full briefing
39 findings · 6 sections- 12 critical
- 18 high
- 9 medium
- Vulnerabilities8 findingsCritical Vulnerabilities Requiring Immediate Action6 critical · 2 high
- Malware7 findingsEmerging Malware Campaigns and Threat Activity1 critical · 5 high · 1 medium
- Data Breaches & Leaks9 findingsData Breaches & Leaks3 critical · 5 high · 1 medium
- Tools & Techniques6 findingsEmerging Attack Techniques and Tools3 high · 3 medium
- Threat Actors5 findingsThreat Actor Activity and Attribution2 critical · 3 high
- Policy4 findingsPolicy, Regulation, and Legal Actions4 medium
Critical Vulnerabilities Requiring Immediate Action
Multiple critical RCE vulnerabilities with active exploitation and public exploits demand urgent patching, including WordPress Core, 7-Zip, SonicWall, and Fortinet platforms.
- Critical severityFortinet FortiSandbox OS Command Injection (CVE-2026-39808, CVE-2026-25089) (opens the source in a new tab)
CISA orders federal agencies to patch by Sunday. Unauthenticated attackers can execute arbitrary commands via crafted HTTP requests. Actively exploited in the wild.
- Critical severitySonicWall SMA1000 Zero-Days Exploited by Inc Ransomware (CVE-2026-15410, CVE-2026-15409) (opens the source in a new tab)
Code injection and SSRF vulnerabilities chained together allow root-level access on mobile access appliances. Actively exploited by Inc ransomware operators.
- Critical severityWordPress Core 'wp2shell' RCE Vulnerabilities - Public Exploits Available (opens the source in a new tab)
Critical remote code execution flaws in WordPress Core now have public exploits. Administrators must patch immediately to prevent widespread compromise.
- Critical severity7-Zip RCE Flaw Exploitable with Malicious Archives (opens the source in a new tab)
7-Zip version 26.02 fixes remote code execution vulnerability allowing attackers to execute code by convincing users to open specially crafted compressed files.
- Critical severityFastify HTTP Proxy Prefix Rewrite Bypass (CVE-2026-16117) (opens the source in a new tab)
Critical CVSS 10.0 vulnerability in @fastify/http-proxy fails to rewrite request prefix when URL-encoded, potentially allowing unauthorized access to backend services.
- Critical severitySiemens ROX II OT Switch Zero-Day Chain (opens the source in a new tab)
Three chained zero-day vulnerabilities allow privilege escalation and persistent root access on Siemens ROX II OT switches used in critical infrastructure.
- High severityWindows LegacyHive Zero-Day Grants Admin Privileges (opens the source in a new tab)
Security researcher releases zero-day exploit allowing attackers to escalate privileges on up-to-date Windows systems. No patch currently available.
- High severityHollowByte: OpenSSL DoS with 11-Byte Payload (opens the source in a new tab)
Vulnerability allows unauthenticated attackers to trigger denial-of-service on OpenSSL servers with minimal payload, causing severe memory bloat.
Source: RSS
Emerging Malware Campaigns and Threat Activity
Significant surge in ACR Stealer attacks targeting enterprises, new macOS information stealer, and sophisticated supply chain compromises via software updates.
- Critical severityViPNet Software Supply Chain Attack Targets Russian Government (opens the source in a new tab)
Advanced threat actor abuses ViPNet private networking software update mechanism to target Russian government agencies, demonstrating sophisticated supply chain compromise.
- High severityACR Stealer Surge Targeting Microsoft Enterprise Customers (opens the source in a new tab)
Microsoft observes significant increase in ACR Stealer attacks using ClickFix lures to steal browser passwords, authentication tokens, and sensitive documents from enterprise environments.
- High severityClickLock macOS Malware Traps Users into Revealing Passwords (opens the source in a new tab)
New macOS information-stealing malware terminates all visible processes to force users into entering system login passwords for credential harvesting.
- High severityOkoBot Framework Delivers 20+ Payloads for Data and Crypto Theft (opens the source in a new tab)
New malicious framework deploys over 20 payloads focused on stealing cryptocurrency wallet seed phrases, credentials, and sensitive data.
- High severityNorth Korean Fake Coding Interview Campaign with SVG Steganography (opens the source in a new tab)
DPRK-aligned hackers hide malware inside SVG flag images to backdoor developer job interview coding tests. Zero antivirus vendors detected the threat.
- High severitySteam Platform Used to Distribute Crypto Wallet Draining Malware (opens the source in a new tab)
FBI arrests Florida man for uploading fake video games containing malware to Steam platform. Malware designed to steal passwords and drain crypto wallets from victims.
- Medium severityMirai Botnet Infrastructure Activity (opens the source in a new tab)
Multiple Mirai malware download URLs detected targeting ARM, MIPS, x86 architectures. Includes infrastructure at codeinspector.ddns.net and various IP addresses.
Data Breaches & Leaks
Major credential exposure affecting 23+ million Paidwork users, healthcare giant Abbott investigates dual breaches, and 30 new ransomware victims posted including critical infrastructure targets.
- Critical severityPaidwork Breach: 23+ Million Accounts Exposed (opens the source in a new tab)
Almost 11GB of data from gig economy platform Paidwork posted publicly containing 23,272,765 unique email addresses plus bank account numbers, dates of birth, passwords, phone numbers, and financial transaction data.
Source: Breach - Critical severityEcopetrol - Colombian Oil Giant ($33.1B Revenue) (opens the source in a new tab)
TheGentlemen ransomware group claims breach of Colombia's national oil company Ecopetrol, operations across center, south, east and north Colombia plus international operations.
Source: Breach - Critical severityIndonesian Maritime Ministry (Dephub) (opens the source in a new tab)
Nova ransomware group claims breach of Indonesia's Directorate of Shipping and Maritime Affairs, critical infrastructure target.
Source: Breach - High severityAbbott Laboratories Investigates Two Unrelated Cyber Incidents (opens the source in a new tab)
Healthcare giant Abbott confirms unauthorized access to legacy Exact Sciences systems in Cancer Diagnostics business and investigates separate LabCentral portal breach claim by ShinyHunters and ShadowByt3$.
- High severityFairlife Ransomware Attack Halts US Dairy Production (opens the source in a new tab)
Coca-Cola subsidiary Fairlife discloses ransomware attack disrupting operations and temporarily suspending production across Michigan, New York, and Arizona plants.
- High severityErnst & Young Data Breach via Support System Compromise (opens the source in a new tab)
E&Y notifies customers of data breach caused by compromise of third-party support ticket system used by IT personnel.
- High severity23andMe $18 Million Settlement for Genetic Data Protection Failures (opens the source in a new tab)
New York Attorney General secures settlement from 23andMe after company failed to adequately protect customers' genetic data in previous breach.
Source: RSS - High severityBulgarian Insurance Companies: Eurohold & Euroins (opens the source in a new tab)
Krybit ransomware group claims breaches of two major Bulgarian financial institutions - Eurohold Bulgaria holding company and Euroins Insurance Company.
Source: Breach - Medium severityBluebell Group - Hong Kong Luxury Brand Curator (opens the source in a new tab)
Blackout ransomware claims breach of family-owned omnichannel brand curator with deadline set for August 8, 2026.
Source: Breach
Emerging Attack Techniques and Tools
AI agent security vulnerabilities, sophisticated evasion techniques including SVG steganography, and novel authentication bypass methods characterize this week's evolving threat landscape.
- High severityClaude Chrome Extension Vulnerable to Malicious Extension Abuse (opens the source in a new tab)
Flaw in Anthropic's Claude for Chrome allows malicious extensions to trigger predefined AI actions by simulating user clicks, potentially abusing access to Gmail, Google Docs, Calendar, and Salesforce.
- High severityMCP Python SDK Missing Host/Origin Validation (CVE-2026-59950) (opens the source in a new tab)
WebSocket server transport in Model Context Protocol SDK lacks Host/Origin validation, enabling potential CSRF and unauthorized access attacks.
Source: CVE - High severitySkipper OPA Bypass - Oversized Body Circumvents Deny Policies (opens the source in a new tab)
Incomplete fix for CVE-2026-50197 allows oversized request bodies to bypass Open Policy Agent deny-on-presence Rego policies in Skipper proxy.
Source: Manual - Medium severity1M+ Emails Use Hidden Text to Evade AI Security Filters (opens the source in a new tab)
Over one million phishing emails employ text salting techniques with hidden content to bypass AI-powered and LLM-based email security filters.
- Medium severityClickFix Social Engineering Lure Evolution (opens the source in a new tab)
ACR Stealer campaigns successfully using ClickFix lures - fake error messages prompting users to run malicious PowerShell commands presented as fixes.
- Medium severityShark Robot Vacuum Flaw Exposes Cameras and Wi-Fi Credentials (opens the source in a new tab)
Vulnerability in Shark robot vacuums allows one compromised device to unlock remote access to many others, exposing home maps, camera feeds, and Wi-Fi passwords.
Threat Actor Activity and Attribution
Multiple ransomware groups remain highly active with 30 new victim postings. North Korean APT continues developer-focused campaigns. Russian government agencies targeted by sophisticated supply chain attack.
- Critical severityTheGentlemen Ransomware: Colombian Energy Sector (opens the source in a new tab)
TheGentlemen group claims breach of Ecopetrol, Colombia's $33.1 billion national oil company with operations across the country and abroad.
- Critical severityInc Ransomware Exploiting SonicWall Zero-Days (opens the source in a new tab)
Inc ransomware operators actively exploiting chained SonicWall SMA vulnerabilities (CVE-2026-15410, CVE-2026-15409) to gain root-level access.
- High severityQilin Ransomware Group: 16 New Victims This Week (opens the source in a new tab)
Qilin posts 16 new victims including healthcare (City Ambulance Service), education (The Nueva School), manufacturing (PP+K, Sicc), food service (Heartland Catfish, Don Tortaco), and critical infrastructure sectors.
- High severityNova Ransomware: Critical Infrastructure Focus (opens the source in a new tab)
Nova group targets Brazilian jewelry retailer, Turkish automotive manufacturer (meralmanisa), Indonesian maritime ministry (Dephub), and Brazilian software company FMZ Tecnologia.
- High severityNorth Korean APT: Fake Coding Interview Campaign (opens the source in a new tab)
DPRK-aligned actors using sophisticated SVG steganography to hide malware in fake developer job interview coding tests, evading all antivirus detection.
Policy, Regulation, and Legal Actions
Regulatory enforcement actions and policy developments around data protection, age verification, and international surveillance legislation.
- Medium severityItaly Fines WINDTRE €1.7M for Data Security Failures (opens the source in a new tab)
Italian DPA issues €1.7 million fine to telecom operator for serious data security shortcomings leading to two breaches exposing 365,000+ customers' personal information.
Source: RSS - Medium severityUK Investigates TikTok for Age-Verification Failures (opens the source in a new tab)
Ofcom launches investigation into TikTok for alleged inadequate age verification, potentially exposing children to online harms in violation of UK online safety laws.
Source: RSS - Medium severityUS Senator Opposes Canadian Surveillance Legislation (opens the source in a new tab)
Sen. Ron Wyden urges Trump administration to push back against Canada's proposed Lawful Access Act that would 'weaponize American technology infrastructure' for surveillance.
Source: RSS - Medium severityMoney Laundering Charges: $43M Investment Fraud Scheme (opens the source in a new tab)
US prosecutors charge New York man and woman for laundering money stolen in large-scale cyber investment fraud scams totaling $43 million.
Sources & Attribution
These briefings are compiled from publicly available threat-intelligence feeds, which may include CISA KEV, NIST NVD, the GitHub Advisory Database (OSV), abuse.ch, and Wordfence Intelligence. Data-breach and credential-leak items may include data from Have I Been Pwned and ransomware.live.
CVE® is a registered trademark of The MITRE Corporation. CVE Records are © The MITRE Corporation, reproduced under the CVE Program Terms of Use. WordPress vulnerability data is provided by Wordfence Intelligence, © Defiant, Inc. Breach data from Have I Been Pwned is licensed under CC BY 4.0.