Your SD-WAN fabric is under active attack for root-level control. 🛡️
CVE-2026-20127 · Severity 10.0 · Critical Authentication Bypass in Cisco Catalyst SD-WAN.
The @[CISA](urn:li:organization:13010360) has issued Emergency Directive 26-03 following confirmed active exploitation of @[Cisco](urn:li:organization:1063) SD-WAN Manager and Controller. This maximum-severity flaw allows unauthenticated remote attackers to obtain administrative privileges and manipulate entire network fabrics.
Federal agencies have been ordered to inventory all systems by tonight and apply patches by tomorrow afternoon. This is not just a vulnerability; it is a live campaign that dates back to 2023 and has now reached a critical threshold.
The uncomfortable truth: If your SD-WAN management plane is compromised, the attacker essentially owns every packet and policy across your entire wide-area network.
→ Inventory all Cisco Catalyst SD-WAN Manager and Controller instances immediately.
→ Apply Cisco provided updates to address CVE-2026-20127 and CVE-2022-20775 by tomorrow.
→ Conduct a deep hunt for indicators of compromise using the hunt guidance provided in ED 26-03.
Have you verified the integrity of your SD-WAN controller logs for unauthorized administrative logins? 👇
#Cybersecurity #NetworkSecurity #SDWAN #ZeroTrust #CISO #CodeDefence