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CVE-2025-33053 Exploitation: A Critical WebDAV Zero-Day RCE Vulnerability Actively Weaponized by Stealth Falcon APT Group
- A critical zero-day RCE vulnerability (CVE-2025-33053) in Microsoft Windows is actively exploited by the Stealth Falcon APT group. The flaw enables RCE through manipulation of the system's working directory and advanced anti-analysis techniques.
- Exploitation of vulnerabilities as initial attack vectors has increased by 34% in 2025, leading to more security breaches.
- Stealth Falcon's campaign targets high-profile entities in the Middle East and Africa, deploying custom implants, keyloggers, stealth backdoors, and the Horus Agent for cyber espionage.
- The attack flow involves phishing emails with malicious URL files exploiting CVE-2025-33053 to execute malware deployment from the adversary's WebDAV server.
- CISA has added CVE-2025-33053 to its KEV catalog with a patch release by Microsoft on June 10, 2025, emphasizing the importance of prompt mitigation measures.
- Recommendations include updating Windows systems, training staff against spear-phishing, monitoring WebDAV traffic, and implementing security solutions to detect unauthorized activities.
- The significance of patching and threat monitoring is emphasized due to the critical risks posed by the widespread use of WebDAV in enterprise environments.
- Stealth Falcon's exploitation highlights their advanced capabilities and strategic focus on high-value targets, necessitating proactive defense measures and continuous monitoring.
- The SOC Prime product suite offers comprehensive defense solutions backed by zero-trust principles, AI, automation, and actionable threat intelligence for global organizations.
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