What's Happening?
Trend Micro has reported a new cyberattack campaign targeting older Cisco routers, exploiting a zero-day vulnerability identified as CVE-2025-20352. The vulnerability, a stack overflow issue in the SNMP of IOS and IOS XE devices, allows attackers to deploy
a rootkit, leading to denial-of-service conditions and remote code execution. The campaign, dubbed Operation ZeroDisco, targets devices without endpoint detection solutions, using modified exploits to gain unauthorized access and deploy malware.
Why It's Important?
This cyberattack highlights significant security risks for organizations using older Cisco devices, emphasizing the need for timely patching and robust security measures. The deployment of rootkits can lead to severe operational disruptions and data breaches, affecting business continuity and exposing sensitive information. Organizations relying on these devices must prioritize security updates and consider upgrading to more secure systems to mitigate vulnerabilities.
What's Next?
Organizations using affected Cisco devices should contact Cisco TAC for assistance in investigating potential compromises. Security teams must enhance monitoring and detection capabilities to identify and respond to threats promptly. The ongoing campaign may prompt further security advisories and updates from Cisco and cybersecurity firms, urging users to implement protective measures.
