CVE-2026-20182
Cisco Catalyst SD-WAN Controller Authentication Bypass 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 action
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.
Federal remediation due May 17, 2026 — past due
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Coverage
- Cisco SD-WAN RCE via CVE-2026-20182 — Mitigation Guide
May 15, 2026
- Cisco Catalyst SD-WAN Authentication Bypass: CVE-2026-20182 Exploit
May 15, 2026
- Cisco Catalyst SD-WAN Controller Authentication Bypass via CVE-2026-20182 Exploited in Zero-Day Attacks
May 14, 2026
- CVE-2026-20182: Cisco SD-WAN Auth Bypass Actively Exploited
May 14, 2026