A series of vulnerabilities in Cisco's network edge software has been actively exploited by attackers, with five of the nine disclosed flaws in firewalls and SD-WAN systems already compromised in the wild since late February. Notably, two zero-day vulnerabilities in Cisco SD-WANs were exploited for at least three years before being discovered and addressed. The exploited vulnerabilities, including those in Cisco's firewall and SD-WAN products, highlight the urgency of patching and assessing exposure to these flaws1. The fact that attackers were able to exploit these vulnerabilities for an extended period without detection raises concerns about the effectiveness of current security measures. The exploitation of these vulnerabilities can have severe consequences, including unauthorized access to sensitive networks and data. This emphasizes the need for immediate assessment and patching to prevent further compromise, as the window for patching is rapidly closing, making it crucial for practitioners to take prompt action to secure their systems.
Cisco’s latest vulnerability spree has a more troubling pattern underneath
⚠️ Critical Alert
Why This Matters
Zero-day activity targeting Cisco means patching windows are already closing — assess your exposure immediately.
References
- CyberScoop. (2026, March 18). Cisco’s latest vulnerability spree has a more troubling pattern underneath. CyberScoop. https://cyberscoop.com/cisco-firewall-sd-wan-vulnerabilities-exploited/
Original Source
CyberScoop
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