Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

Cisco Catalyst SD-WAN

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. Added to CISA KEV on 2026-05-14 (federal deadline 2026-05-17).

First seen: 14 May 2026
Last update: 14 May 2026, 12:00 UTC
Identifiers: CVE-2026-20182
Source: CISA KEV
On the menu as: VPN & firewalls

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: Cisco Catalyst SD-WAN
Ids: CVE-2026-20182

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. Added to CISA KEV on 2026-05-14 (federal deadline 2026-05-17).

## Steps
1. This touches infrastructure (vpn-edge). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-20182") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://nvd.nist.gov/vuln/detail/CVE-2026-20182 https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa2-v69WY2SW https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems
https://pwned.coffee/i/cisco-catalyst-sd-wan-controller-authentication-bypass-v-cve-2026-20182

Sources

Totalone hot coffee