Cisco IOS XE Software Errdisable Denial of Service Vulnerability

Published 8 y ago 2018-10-05 · modified 4 mo ago 2026-06-17 · JSON

CVSS

6.1

v3.0 · NVD

CISA KEV

not known exploited

EPSS

0.5%

percentile 44%

Public exploits

none known

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.

CISA SSVC assessment

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 23 mo ago 2024-11-25

Exploit prediction (EPSS)

0.52% probability of exploitation in the next 30 days, higher than 44% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	6.1	`CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H`
NVD	2.0	5.7	`AV:A/AC:M/Au:N/C:N/I:N/A:C`

Affected products

Cisco Cisco IOS XE Software

Classification

Weakness

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

Technology feeds

Cisco IOS (RSS, critical only)

References

tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-errdisable · vendor-advisory, x_refsource_CISCO, x_transferred
securityfocus.com /bid/105400 · vdb-entry, x_refsource_BID, x_transferred
securitytracker.com /id/1041737 · vdb-entry, x_refsource_SECTRACK, x_transferred

Sources

CVE List: CVE-2018-0480
NVD: CVE-2018-0480

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary