CVE-2018-0441

mediumpriority · track · 30EPSS 0.009 · 58 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.86% (58th) EPSS

CVSS 6.1 · medium

Is it mine?

20 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-28

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Aironet Access Point Softwarecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

7.4

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.1–7.4

v2.06.1mediumAV:A/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 6.5 · impact 6.9

v3.07.4highCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 4

v3.07.4highCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · ENISA EU

v3.07.4highCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · Cisco PSIRT US

v3.07.4highCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · psirt@cisco.com USexploitability 2.8 · impact 4

v3.06.8mediumCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.4highAV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USprimaryCWE-400US

affected products (20)

Products and version ranges known to be affected.

Cisco Cisco Aironet Access Point Softwareall versionscisco_csafUS
Cisco Cisco Aironet Access Point Software≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco IOS≤ 8.8fstec_bduRU
Cisco Systems Inc. Cisco IOS≤ 8.7fstec_bduRU
Cisco Systems Inc. Cisco IOS≤ 8.6fstec_bduRU
Cisco Systems Inc. Cisco IOS≤ 8.5fstec_bduRU
Cisco Systems Inc. Cisco IOS≤ 8.4fstec_bduRU
Cisco Systems Inc. Cisco IOS≤ 8.3fstec_bduRU
Cisco Systems Inc. Cisco IOS≤ 8.2fstec_bduRU
Cisco Systems Inc. Cisco IOS≤ 8.0fstec_bduRU
Cisco Systems Inc. Cisco IOS≤ 8.1fstec_bduRU
cisco access points< 8.3.140.0nvdUScpe:2.3:o:cisco:access_points:*:*:*:*:*:*:*:*
cisco access points= 15.3(3)jdnvdUScpe:2.3:o:cisco:access_points:*:*:*:*:*:*:*:*
cisco access points= 8.0(140.0)nvdUScpe:2.3:o:cisco:access_points:*:*:*:*:*:*:*:*
cisco access points= 8.2(141.0)nvdUScpe:2.3:o:cisco:access_points:*:*:*:*:*:*:*:*
cisco access points= 8.2(151.0)nvdUScpe:2.3:o:cisco:access_points:*:*:*:*:*:*:*:*
cisco access points= 8.3(102.0)nvdUScpe:2.3:o:cisco:access_points:*:*:*:*:*:*:*:*
cisco access points= 8.3(112.0)nvdUScpe:2.3:o:cisco:access_points:*:*:*:*:*:*:*:*
cisco access points= 8.3(114.74)nvdUScpe:2.3:o:cisco:access_points:*:*:*:*:*:*:*:*
cisco access points8.4 → 8.5.110.0nvdUScpe:2.3:o:cisco:access_points:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-20181017-ap-ft-dosCisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability2018-10-17csaf · cisco_csafUS
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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

published 2018-10-17modified 2026-06-17

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+9620 more

references (9)

External citations — patches, advisories, analysis.

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