What’s Vulnerable › Vulnerabilities

CVE-2018-0470: Cisco IOS XE Software HTTP Denial of Service Vulnerability

• Severity: high (CVSS 8.6 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-10-05 · updated 2026-06-17
• Weakness: CWE-399

Description

A vulnerability in the web framework of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a buffer overflow condition on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to the affected software improperly parsing malformed HTTP packets that are destined to a device. An attacker could exploit this vulnerability by sending a malformed HTTP packet to an affected device for processing. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected device, resulting in a DoS condition.

Affected products

• Cisco IOS XE: 16.2.0, 16.3(1)

References

• http://www.securityfocus.com/bid/105397
• http://www.securitytracker.com/id/1041737
• https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-webdos
• http://www.securityfocus.com/bid/105397
• http://www.securitytracker.com/id/1041737
• https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-webdos

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