Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009.
Published 2009-08-19 17:30:01
Updated 2009-08-21 04:00:00
View at NVD,
Vulnerability category: Input validationDenial of service

CVE-2009-2055 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
Cisco IOS XR,when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS).
Added on 2022-03-25 Action due date 2022-04-15

Exploit prediction scoring system (EPSS) score for CVE-2009-2055

Probability of exploitation activity in the next 30 days EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2009-2055

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen

CWE ids for CVE-2009-2055

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: (Primary)

Products affected by CVE-2009-2055

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