Week in review: Cisco SD-WAN 0-day exploited, Patch Tuesday forecast

Key Points:

• A critical 0-day privilege escalation vulnerability (CVE-2026-20245) in Cisco Catalyst SD-WAN Manager is being actively exploited by attackers, with no patch currently available.
• The vulnerability allows unauthorized access and potential control over affected systems, posing significant risks to organizations using Cisco SD-WAN solutions.
• Immediate actions include monitoring for unusual activity, applying network segmentation, and preparing for a patch as soon as it is released.

Technical Details: CVE-2026-20245 is a privilege escalation flaw that enables attackers to gain elevated permissions within the Cisco SD-WAN environment. Organizations should prioritize this vulnerability due to its potential for exploitation.

MITRE ATT&CK Techniques:

• T1068 - Exploitation for Client Execution (Privilege Escalation)

IOCs Mentioned: None mentioned