New details have been revealed on how hackers exploited a Cisco Catalyst SD-WAN vulnerability tracked as CVE-2026-20245 in zero-day attacks to create rogue root accounts on targeted devices. [...]
The continuous discovery of zero-day vulnerabilities in critical network infrastructure reflects ongoing sophisticated cyberattack campaigns targeting foundational technology. This specific disclosure from Mandiant immediately follows the exploitation, detailing the vector used for root access.
A strategic reader should care because successful exploitation of SD-WAN zero-days can provide attackers with deep access into organizational networks, enabling espionage, disruption, or data exfiltration. The compromise of core network devices poses a significant supply chain risk and operational integrity concern.
Organizations relying on Cisco Catalyst SD-WAN products must immediately patch and review their security posture, as the method for gaining root access via this vulnerability is now public. This incident underscores the persistent challenge of securing complex, interconnected network infrastructure at scale.
- · Cybersecurity research firms
- · Security consultants
- · Network security vendors
- · Organizations using unpatched Cisco SD-WAN
- · Cisco (reputation)
- · Infrastructure software vendors
Immediate patching efforts and security audits for Cisco Catalyst SD-WAN deployments will intensify globally.
Increased scrutiny and investment in supply chain security for network infrastructure will likely follow, pushing vendors for more robust vulnerability management.
Nations and critical infrastructure operators may reassess reliance on single-vendor solutions for core network components due to repeated high-profile vulnerabilities.
This signal links to a primary source. Continuum Brief monitors and indexes it as part of the live intelligence stream — we do not republish source content.
Read at BleepingComputer