Applied Cybernetics Group Sat, Nov 7, 2026 · data 12:17Z
thrunt.me thrunt me harder

Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability

Added to KEV
2022-03-25
Federal due date
2022-04-15
Vendor
Cisco
Product
IOS XR
EPSS
88.6th percentile (score 0.033, as of 2026-11-06)
NVD CVSS v3.1
—
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2009-2055

CISA short description

Cisco IOS XR,when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS).

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.