Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability

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

CVSS

7.4

v3.0 · CNA

CISA KEV

not known exploited

EPSS

0.9%

percentile 59%

Public exploits

none known

A vulnerability in the 802.11r Fast Transition feature set of Cisco IOS Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a corruption of certain timer mechanisms triggered by specific roaming events. This corruption will eventually cause a timer crash. An attacker could exploit this vulnerability by sending malicious reassociation events multiple times to the same AP in a short period of time, causing a DoS condition on the affected AP.

CISA SSVC assessment

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

Exploit prediction (EPSS)

0.86% probability of exploitation in the next 30 days, higher than 59% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
CNA	3.0	7.4	`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H`
CNA	3.0	7.4	`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H`
NVD	3.0	7.4	`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H`
NVD	2.0	6.1	`AV:A/AC:L/Au:N/C:N/I:N/A:C`

Affected products

Cisco Cisco Aironet Access Point Software

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption

References

securityfocus.com /bid/105680 · vdb-entry, x_refsource_BID, x_transferred
securitytracker.com /id/1041918 · vdb-entry, x_refsource_SECTRACK, x_transferred
tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-ap-ft-dos · vendor-advisory, x_refsource_CISCO, x_transferred

Sources

CVE List: CVE-2018-0441
NVD: CVE-2018-0441

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

Summary