Cisco Catalyst 6800 Series Switches VPLS Denial-of-Service Vulnerability

Added to KEV
2022-03-03
Federal due date
2022-03-24
Vendor
Cisco
Product
Catalyst 6800 Series Switches
EPSS
77.5th percentile (score 0.010, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2017-12238

CISA short description

A vulnerability in the Virtual Private LAN Service (VPLS) code of Cisco IOS for Cisco Catalyst 6800 Series Switches could allow an unauthenticated, adjacent attacker to cause a denial of service.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.