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Case File

CVE-2009-2055

MEDIUM · CVSS 5.9 EPSS 3.33% CISA KEV · Actively Exploited

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2009-08-19 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.9. It affects Cisco. It is listed in CISA's Known Exploited Vulnerabilities catalog, indicating confirmed active exploitation in the wild. It may be remotely exploitable. It may lead to a denial-of-service condition.

CISA KEV Details

Status: This CVE is listed in CISA's Known Exploited Vulnerabilities catalog.

Ransomware use: Unknown

Added to KEV: 2022-03-25

Required action: Apply updates per vendor instructions.

CVE
CVE-2009-2055
Severity
MEDIUM
CVSS
5.9
EPSS
3.33%
Cisco

Original NVD Description

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.