Surge in network scans targeting Cisco ASA devices raise concerns

A significant increase in network scanning activity targeting Cisco ASA devices has been observed, raising alarms within the cybersecurity community. These scans aim to identify vulnerable Cisco Adaptive Security Appliance (ASA) devices that could be exploited by attackers to gain unauthorized access or disrupt network operations. The surge in scanning activity highlights the ongoing threat landscape where threat actors continuously seek out weaknesses in widely deployed network infrastructure. Cisco ASA devices, known for their role in firewall and VPN services, are critical components in many enterprise networks, making them attractive targets for cybercriminals. The scans often precede more targeted attacks, including exploitation attempts leveraging known vulnerabilities such as CVE-2023-20248 and CVE-2023-20249, which affect certain ASA software versions. Organizations using Cisco ASA devices are urged to ensure their systems are updated with the latest security patches and to monitor network traffic for unusual scanning behavior. Implementing robust intrusion detection and prevention systems can help mitigate risks associated with these scanning campaigns. This trend underscores the importance of proactive cybersecurity measures and continuous monitoring to defend against evolving threats targeting network infrastructure devices. Staying informed about emerging vulnerabilities and threat actor tactics is essential for maintaining a strong security posture in today's digital environment.

This Cyber News was published on www.bleepingcomputer.com. Publication date: Mon, 08 Sep 2025 21:45:13 +0000