Possible Cisco Catalyst SD-WAN Manager Tenant Upload Exploitation CVE-2026-20245 (via process_creation)

ATT&CK techniques

Initial Access → Priv Esc

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
- T1068Exploitation for Privilege Escalation
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the tenant-upload tenant-list request pattern used to exploit CVE-2026-20245 in Cisco Catalyst SD-WAN Manager, where a crafted tenant CSV was uploaded to inject a privileged account into the appliance. Adversaries leverage this zero-day to gain root-level control of the management plane, so this request signature is a high-value indicator of active exploitation.

Reporting behind it

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Possible Cisco Catalyst SD-WAN Manager Tenant Upload Exploitation CVE-2026-20245 (via process_creation)

Pivot detection · T1190 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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