What’s Vulnerable › Vulnerabilities

CVE-2018-0480: Cisco IOS XE Software Errdisable Denial of Service Vulnerability

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% 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-362

Description

A vulnerability in the errdisable per VLAN feature of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause the device to crash, leading to a denial of service (DoS) condition. The vulnerability is due to a race condition that occurs when the VLAN and port enter an errdisabled state, resulting in an incorrect state in the software. An attacker could exploit this vulnerability by sending frames that trigger the errdisable condition. A successful exploit could allow the attacker to cause the affected device to crash, leading to a DoS condition.

Affected products

• Cisco IOS XE: 3.6(5)

References

• http://www.securityfocus.com/bid/105400
• http://www.securitytracker.com/id/1041737
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-errdisable
• http://www.securityfocus.com/bid/105400
• http://www.securitytracker.com/id/1041737
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-errdisable

Get alerted when CVE-2018-0480 or the next vulnerability affects your stack