Summary
| Parameter | Value |
|---|---|
| CVE ID | CVE-2026-20182 |
| Alert Source | CISA KEV - Active Exploitation |
| CVE Publication Year | 2026 |
| Date Published | 2026-05-14 |
| Vendor | Cisco |
| Product | Catalyst SD-WAN |
| CVSS Score | 10.0 (critical) |
| EPSS Score | No data |
| CISA KEV | Yes - confirmed active exploitation |
| Ransomware | Not confirmed |
| Remediation Deadline | 2026-05-17 |
Vulnerability Description
Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.
Required Actions
Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlined in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.
Who Is Affected?
This vulnerability affects Catalyst SD-WAN by Cisco. Check if your organization uses this software and requires updates.
Sources
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