Security Domain
Communication & Network Security
Network architecture, protocols, secure communication channels, and network attacks.
12 Articles
← All domainsCISA Adds Ivanti EPMM CVE-2026-1340 to KEV — Federal Patch Deadline Today
CISA has added CVE-2026-1340, a critical unauthenticated remote code execution flaw in Ivanti Endpoint Manager Mobile, to the Known Exploited Vulnerabilities catalogue with a federal agency deadline of 11 April. The vulnerability chains with CVE-2026-1281 to enable full appliance takeover and has been actively exploited since January 2026. All organisations running Ivanti EPMM on-premises must patch immediately.
Palo Alto PAN-OS CVE-2026-3197: SAML Auth Bypass Under Mass Exploitation by Nation-State Actors
A critical SAML authentication bypass in Palo Alto Networks PAN-OS GlobalProtect allows unauthenticated remote attackers to gain administrative firewall access. CVE-2026-3197 chains with a command injection flaw to achieve root-level OS execution and is being exploited by at least three distinct threat actor clusters including a China-nexus nation-state group. CISA has added it to the KEV catalogue.
Citrix NetScaler CVE-2026-3055 Actively Exploited — CISA Orders Patch by 2 April
A critical unauthenticated memory overread vulnerability in Citrix NetScaler ADC and NetScaler Gateway is being actively exploited in the wild, with CISA adding it to the Known Exploited Vulnerabilities catalogue. Appliances configured as SAML Identity Providers are leaking sensitive memory contents including session tokens via a crafted SAML request.
Iranian-Affiliated Hackers Target US Water, Energy and Government Facilities via Internet-Exposed PLCs
A joint advisory from CISA, FBI, NSA, and the Department of Energy warns that Iranian-affiliated APT actors have been compromising internet-facing programmable logic controllers at water utilities, energy facilities and local government sites since at least March 2026. Operators should treat any internet-exposed OT device as potentially compromised and implement immediate network isolation.
PAN-OS GlobalProtect Denial-of-Service CVE-2026-0227 — PoC Published, Firewalls Risk Forced Maintenance Mode
A proof-of-concept exploit has been published for CVE-2026-0227, a denial-of-service vulnerability in Palo Alto Networks PAN-OS affecting GlobalProtect gateways and portals. An unauthenticated remote attacker can crash the firewall into a mandatory maintenance mode by sending malformed requests to the GlobalProtect interface. Prisma Access deployments are also affected. Palo Alto has released patches; the PoC significantly elevates exploitation risk.
Citrix CVE-2026-3055 Confirmed Exploited — CISA KEV Addition Triggers Mandatory Patch Deadline
CISA added CVE-2026-3055 to its Known Exploited Vulnerabilities catalogue on 30 March, confirming active exploitation of the critical Citrix NetScaler memory overread vulnerability disclosed the previous week. NetScaler appliances configured as SAML Identity Providers are leaking session tokens from memory, allowing attackers to impersonate users without credentials. Organisations must patch immediately.
F5 BIG-IP APM Vulnerability Reclassified as Critical RCE — CISA Mandates Three-Day Patch Window
A vulnerability in F5 BIG-IP Access Policy Manager initially classed as denial-of-service has been reclassified as critical remote code execution with CVSS 9.8 after active exploitation was confirmed. CISA added CVE-2025-53521 to its Known Exploited Vulnerabilities catalogue on 27 March and set a three-day patch deadline for federal agencies. All organisations running BIG-IP APM should treat this as an emergency.
Ubiquiti UniFi CVSS 10 Path Traversal CVE-2026-22557 Enables Full Account Takeover
Ubiquiti disclosed a maximum-severity path traversal vulnerability in the UniFi Network Application that allows unauthenticated attackers to read arbitrary files from the underlying OS and take over controller accounts with no credentials required. Censys identified approximately 87,000 internet-exposed UniFi endpoints at time of disclosure. The vulnerability is frequently chained with a companion NoSQL injection flaw for full administrative access.
MongoBleed CVE-2025-14847: 87,000 Exposed MongoDB Instances Under Active Attack, Memory Leaking Credentials
CVE-2025-14847, named MongoBleed, is an unauthenticated memory disclosure vulnerability in MongoDB Server that allows attackers to read uninitialized heap memory from any internet-exposed instance. With 87,000 potentially vulnerable deployments globally and CISA KEV inclusion confirmed, active exploitation campaigns are targeting MongoDB instances to extract credentials, API keys, and sensitive data cached in server memory. The fix has been available since December 2025.
Interlock Ransomware Exploited Cisco FMC Zero-Day for 36 Days Before Patch — Root Access on Enterprise Firewalls
Cisco's Firepower Management Center (FMC) contains a CVSS 10.0 deserialization vulnerability that Interlock ransomware was exploiting as a zero-day for 36 days before Cisco disclosed or patched it. CVE-2026-20131 allows unauthenticated remote attackers to execute arbitrary Java code as root on any internet-exposed FMC appliance. Cisco patched the flaw on 4 March 2026, but unpatched appliances remain under active ransomware targeting.
React2Shell CVE-2025-55182: China-Nexus Groups Exploit Max-Severity Next.js Flaw Across 30+ Organisations
CVE-2025-55182 (React2Shell), a maximum-severity unauthenticated remote code execution vulnerability in React Server Components and Next.js, is being actively exploited by China-state-affiliated threat groups and financially motivated actors simultaneously. Palo Alto Networks has confirmed over 30 organisations breached and 77,000 internet-exposed vulnerable instances, with attackers systematically harvesting AWS credentials, database connection strings, and SSH keys from compromised web infrastructure.
Ivanti EPM Authentication Bypass CVE-2026-1603 Exploited — Federal Patch Deadline Today
CISA added CVE-2026-1603, an authentication bypass in Ivanti Endpoint Manager, to the Known Exploited Vulnerabilities catalogue on 9 March with a federal agency patch deadline of 23 March. The flaw allows unauthenticated attackers to bypass authentication entirely and steal Domain Administrator password hashes and service account credentials from EPM's credential vault.