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