CVE-2026-20182
CRITICAL CISA KEV
ACT NOW
Priority: 9.18
BB Relevance:
90/100
Published: 2026-05-14
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
Scope Change
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Changed
C:
High
I:
High
A:
High
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.
CISA Known Exploited Vulnerability
Vendor / Product
Cisco — Catalyst SD-WAN
Date Added
2026-05-14
Remediation Due
2026-05-17
CISA Mitigation Instructions: https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems ; https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa2-v69WY2SW ; https://nvd.nist.gov/vuln/detail/CVE-2026-20182
Weakness Classification (1)
Affected Software (24)
References & Advisories (3)
Vendor Advisory
US Government Resource
Not Applicable