Medium severity4.3NVD Advisory· Published Apr 19, 2018· Updated Jun 17, 2026

CVE-2018-0257

Description

A vulnerability in Cisco IOS XE Software running on Cisco cBR Series Converged Broadband Routers could allow an unauthenticated, adjacent attacker to cause high CPU usage on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to the incorrect handling of certain DHCP packets. An attacker could exploit this vulnerability by sending certain DHCP packets to a specific segment of an affected device. A successful exploit could allow the attacker to increase CPU usage on the affected device and cause a DoS condition. Cisco Bug IDs: CSCvg73687.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./iOS Xr Softwarellm-fuzzy
Cisco Systems, Inc./cBR-8 Converged Broadband Routersllm-fuzzy

Patches

Vulnerability mechanics

References

www.securityfocus.com/bid/103948nvdThird Party AdvisoryVDB Entry
www.securitytracker.com/id/1040716nvdThird Party AdvisoryVDB Entry
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-cbr8nvdVendor Advisory

News mentions

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