Home › Exploited CVEs › CVE-2026-20182

CVE-2026-20182: Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

Cisco Catalyst SD-WAN · in CISA KEV since 2026-05-14

2026-05-14added to KEV

2026-05-17federal remediation due date

91.52%EPSS exploit probability (30 days) 99.8th percentile

10 CRITICALCVSS 3.1

Unknownknown ransomware use

0days from NVD publication to KEV

What it is

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 (CISA)

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.

CWE	CWE-287
CVSS vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
NVD published	2026-05-14 (Analyzed)

Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2026-20182.json · all KEV CVEs

Kevscope: daily CISA KEV + EPSS datasetThe whole KEV catalog joined with daily EPSS and CVSS scores as CSV/Parquet, refreshed daily. Free to download.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.