Java

QuimaRAT is a cross-platform, Java-based remote access trojan sold as a malware-as-a-service subscription on the dark web. It targets Windows, macOS, and Linux systems by embedding JNA native libraries for multiple architectures within a JAR archive built for Java SE 8. The RAT decrypts an internal configuration file using repeating-key XOR, performs anti-analysis and virtualization checks, establishes persistence via OS-specific mechanisms, and maintains resilient C2 communication through HANDSHAKE and HEARTBEAT protocols. With 23 implemented commands and 212 protocol-only commands, the platform is highly extensible through runtime modules and fileless payloads.

Adobe ColdFusion security bulletin APSB26-68 patches 11 CVEs across ColdFusion 2025 and 2023, including critical arbitrary file read/write vulnerabilities in the RDS module and a path traversal in the CKEditor file manager upload endpoint. When RDS is enabled with authentication disabled, attackers can use the simple length-prefixed RDS RPC protocol to read or write arbitrary files, achieving remote code execution as SYSTEM by deploying a CFML webshell. A separate unauthenticated path traversal in the CKEditor file manager allows file uploads to arbitrary directories, also executing as SYSTEM.

Ivanti Sentry is affected by a critical pre-authenticated OS command injection vulnerability (CVE-2026-10520) and an authentication bypass vulnerability (CVE-2026-10523). The command injection flaw allows unauthenticated attackers to achieve root-level remote code execution by sending specially crafted XML payloads to the /mics/api/v2/sentry/mics-config/handleMessage endpoint.

2026-05-135 minRecorded Futurecritical

In March 2026, 31 high-impact vulnerabilities were actively exploited, highlighted by the Interlock Ransomware Group leveraging a CVSS 10.0 zero-day in Cisco Secure FMC (CVE-2026-20131). The attackers utilized insecure Java deserialization to gain root access, deploying custom RATs, memory-resident web shells, and ransomware across enterprise networks.

2026-05-135 minWithSecurecritical

Threat actors are exploiting critical RCE vulnerabilities (CVE-2026-1281 and CVE-2026-1340) in Ivanti EPMM to deploy AntSword-based webshells. The automated attacks achieve root privilege escalation and rapidly exfiltrate sensitive databases and configuration files containing credentials.

2026-05-136 minANY.RUNhigh

MicroStealer is a newly identified, fast-spreading infostealer that targets sensitive corporate and personal data, including browser credentials, session cookies, and cryptocurrency wallets. It employs a sophisticated NSIS to Electron to Java execution chain, combined with obfuscation and anti-analysis checks, to maintain a low detection rate across security vendors.