Cyber Security
Application Security
NGINX 1.31.0 Zero-Day nginx-poolslip Bypasses ASLR
Researcher Vega publicly disclosed nginx-poolslip, an unpatched RCE zero-day in NGINX 1.31.0 that bypasses ASLR and threatens tens of millions of servers.
Cybersecurity
WantToCry Ransomware Hits SMB Ports, Evades EDR Tools
Sophos CTU analysis reveals WantToCry ransomware encrypts files off-device via brute-forced SMB sessions, leaving no local binary for EDR tools to detect.
Cybersecurity
DOJ Secures Guilty Pleas From Tech-Support Fraud Executives
Two U.S. telecom executives pleaded guilty to concealing a six-year tech-support fraud scheme that cost Americans an estimated $2.1 billion annually.
Application Security
BadIIS Malware-as-a-Service Hijacks IIS Servers for SEO Fraud
Cisco Talos exposed BadIIS, a Chinese-speaking MaaS platform hijacking IIS servers to redirect traffic and manipulate search rankings since 2021.
Cybersecurity
GhostTree Exploit Hangs Windows Defender With NTFS Junctions
Varonis Threat Labs disclosed GhostTree, an NTFS junction loop technique that causes Windows Defender to hang and fail to detect hidden malware files.
Cybersecurity
SilverFox APT Spreads ValleyRAT via Fake Microsoft Teams Sites
K7 Security Labs found SilverFox APT serving ValleyRAT via trojanized Teams installers on teams-securecall.com, targeting credentials and crypto wallets.
Application Security
TamperedChef Hides Malware Inside Signed Apps
Palo Alto's Unit 42 documented TamperedChef, a signed-app malware campaign with 12,000 global infections using digitally signed certificates to evade detection.
Application Security
Chrome 148 Patches Critical WebRTC Use-After-Free
Google patched 16 Chrome vulnerabilities including critical CVE-2026-9111, a WebRTC use-after-free enabling drive-by exploitation without user interaction.
CVE Vulnerability Alerts
P2PInfect Botnet Infiltrates Kubernetes Clusters via Redis
FortiGuard found P2PInfect enrolled enterprise GKE Kubernetes clusters for six months undetected via exposed Redis instances and a 2022 CVSS 10.0 flaw.
Cybersecurity
Group-IB Exposes Five Brokers Fabricating Breach Alerts From Old Leaks
Group-IB identified five dark web brokers posting 500–1,000 fake corporate breach ads monthly using recycled Facebook 2021, Eatigo, and Truecaller leak data.
Cybersecurity
NYC Health + Hospitals Breach Exposes 1.8M Patients’ Fingerprints
Hackers spent 77 days inside NYC Health + Hospitals via a vendor breach, stealing fingerprints, medical records, and SSNs from 1.8 million patients.
Cybersecurity
Poland Drops Signal After Russian APTs Compromise Officials’ Accounts
Poland abandoned Signal after Russian APTs compromised officials' accounts via fake support calls and malicious QR codes that bypassed its encryption.
Cybersecurity
EvilTokens Service Breaches 340 Microsoft 365 Orgs via OAuth Tokens
EvilTokens, a phishing service launched in February 2026, bypassed MFA in 340 Microsoft 365 organizations by stealing OAuth tokens instead of passwords.
Cybersecurity
Webworm APT Uses Discord and OneDrive as C2 in Government Espionage
Webworm, a China-aligned APT, deployed EchoCreep and GraphWorm backdoors that abuse Discord and Microsoft OneDrive as C2 channels against government targets.
Cybersecurity
PinTheft PoC Goes Public, Narrowing Arch Linux Exploit Window
V12 security team released a working PinTheft exploit for an Arch Linux kernel double-free, enabling local root escalation on unpatched systems with RDS loaded.
Application Security
Anthropic Silently Fixed Claude Code Null-Byte Sandbox Escape
A null-byte sandbox bypass in Claude Code allowed credential exfiltration via prompt injection, present from October 2025 until Anthropic's silent March patch.
Cybersecurity
Huawei Zero-Day Caused Luxembourg’s 3-Hour National Telecom Blackout
A zero-day in Huawei routers crashed Luxembourg's national telecom in July 2025 for three hours, cutting emergency services, with no CVE and no confirmed patch.
Application Security
CVE-2026-3102: ExifTool Image Injection Runs Shell Commands on macOS
CVE-2026-3102 in ExifTool's SetMacOSTags lets a crafted image execute shell commands on macOS; the flaw is patched in ExifTool 13.50 after Kaspersky disclosure.
Application Security
Single-Letter Go Typosquat Backdoors Financial and Crypto Developers
A Go module typosquatting shopspring/decimal deployed a DNS-based backdoor polling for OS commands every five minutes, targeting financial app developers.
Application Security
CVE-2026-46376: FreePBX Hard-Coded Credentials Open VoIP Portals
CVE-2026-46376 in FreePBX hardcodes setup credentials in the User Control Panel, letting unauthenticated attackers access phone systems and commit toll fraud.
Application Security
Swiss Government SharePoint Breach Compromised 200 Accounts
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Cybersecurity
4,407 Rockwell PLCs Exposed Online, 22 in Water Cities
CVE Vulnerability Alerts
Zapscape KVM Flaw Lets Privileged L1 Guest Escape to Host
This Week’s Security Spotlight
Application Security
CoreBreak Flaws Let Attackers Invoke AWS, Google, Vercel Tools
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BadIIS Malware-as-a-Service Hijacks IIS Servers for SEO Fraud
Cisco Talos exposed BadIIS, a Chinese-speaking MaaS platform hijacking IIS servers to redirect traffic and manipulate search rankings since 2021.
GhostTree Exploit Hangs Windows Defender With NTFS Junctions
Varonis Threat Labs disclosed GhostTree, an NTFS junction loop technique that causes Windows Defender to hang and fail to detect hidden malware files.
SilverFox APT Spreads ValleyRAT via Fake Microsoft Teams Sites
K7 Security Labs found SilverFox APT serving ValleyRAT via trojanized Teams installers on teams-securecall.com, targeting credentials and crypto wallets.
TamperedChef Hides Malware Inside Signed Apps
Palo Alto's Unit 42 documented TamperedChef, a signed-app malware campaign with 12,000 global infections using digitally signed certificates to evade detection.
Chrome 148 Patches Critical WebRTC Use-After-Free
Google patched 16 Chrome vulnerabilities including critical CVE-2026-9111, a WebRTC use-after-free enabling drive-by exploitation without user interaction.
P2PInfect Botnet Infiltrates Kubernetes Clusters via Redis
FortiGuard found P2PInfect enrolled enterprise GKE Kubernetes clusters for six months undetected via exposed Redis instances and a 2022 CVSS 10.0 flaw.
Group-IB Exposes Five Brokers Fabricating Breach Alerts From Old Leaks
Group-IB identified five dark web brokers posting 500–1,000 fake corporate breach ads monthly using recycled Facebook 2021, Eatigo, and Truecaller leak data.
NYC Health + Hospitals Breach Exposes 1.8M Patients’ Fingerprints
Hackers spent 77 days inside NYC Health + Hospitals via a vendor breach, stealing fingerprints, medical records, and SSNs from 1.8 million patients.
Poland Drops Signal After Russian APTs Compromise Officials’ Accounts
Poland abandoned Signal after Russian APTs compromised officials' accounts via fake support calls and malicious QR codes that bypassed its encryption.
EvilTokens Service Breaches 340 Microsoft 365 Orgs via OAuth Tokens
EvilTokens, a phishing service launched in February 2026, bypassed MFA in 340 Microsoft 365 organizations by stealing OAuth tokens instead of passwords.
Webworm APT Uses Discord and OneDrive as C2 in Government Espionage
Webworm, a China-aligned APT, deployed EchoCreep and GraphWorm backdoors that abuse Discord and Microsoft OneDrive as C2 channels against government targets.
PinTheft PoC Goes Public, Narrowing Arch Linux Exploit Window
V12 security team released a working PinTheft exploit for an Arch Linux kernel double-free, enabling local root escalation on unpatched systems with RDS loaded.
Anthropic Silently Fixed Claude Code Null-Byte Sandbox Escape
A null-byte sandbox bypass in Claude Code allowed credential exfiltration via prompt injection, present from October 2025 until Anthropic's silent March patch.
Huawei Zero-Day Caused Luxembourg’s 3-Hour National Telecom Blackout
A zero-day in Huawei routers crashed Luxembourg's national telecom in July 2025 for three hours, cutting emergency services, with no CVE and no confirmed patch.
CVE-2026-3102: ExifTool Image Injection Runs Shell Commands on macOS
CVE-2026-3102 in ExifTool's SetMacOSTags lets a crafted image execute shell commands on macOS; the flaw is patched in ExifTool 13.50 after Kaspersky disclosure.
Single-Letter Go Typosquat Backdoors Financial and Crypto Developers
A Go module typosquatting shopspring/decimal deployed a DNS-based backdoor polling for OS commands every five minutes, targeting financial app developers.
CVE-2026-46376: FreePBX Hard-Coded Credentials Open VoIP Portals
CVE-2026-46376 in FreePBX hardcodes setup credentials in the User Control Panel, letting unauthenticated attackers access phone systems and commit toll fraud.
Pardus Linux CVSS 9.3 Flaw Exposes Turkish Government Systems to Root
A three-vulnerability chain in Pardus Linux's pardus-update package lets any local user gain root on Turkish government systems; no patch is available yet.
CVE-2026-46333: Linux Kernel Flaw Grants Root via ssh-keysign
Qualys disclosed CVE-2026-46333, a nine-year-old Linux privilege escalation flaw that gives local users a reliable path to root on Debian, Fedora, and Ubuntu.
CISA Adds Two Exploited Microsoft Defender Zero-Days to KEV
Microsoft Defender is actively being exploited via two zero-days, CVE-2026-41091 and CVE-2026-45498, which CISA added to its KEV catalog on May 20, 2026.