CVE-2009-2055
Actively exploited. CVE-2009-2055 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Cisco IOS XR,when BGP is the configured routing feature, allows remote attackers to cause a denial-of-service (DoS).
CSIRTS triage
- What
- A vulnerability in BGP can be exploited to cause a denial-of-service condition.
- Who is affected
- Deployments of Cisco IOS XR with BGP configured are affected.
- Urgency
- Remediation is critical due to the severity of the denial-of-service risk and active exploitation.
- Action
- Implement the recommended patches or mitigations from Cisco.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 87% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2009-2055: Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerabilitycisa-kev · 2022-03-25
External references
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[](https://www.csirts.com/cve/CVE-2009-2055)