How severe is CVE-2018-0441?

CVE-2018-0441 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-0441 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-0441?

CVE-2018-0441 primarily affects Cisco Access Points. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-0441?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-0441 published?

CVE-2018-0441 was published on 2018-10-17 and last updated on 2026-06-17.

CVE-2018-0441

CVE-2018-0441 is a high-severity vulnerability in Cisco Access Points with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v2: 6.1
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Cisco Access Points
Published: 2018-10-17
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-0441?: 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.
How severe is CVE-2018-0441?: CVE-2018-0441 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-0441 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-0441?: CVE-2018-0441 primarily affects Cisco Access Points. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-0441?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-0441 published?: CVE-2018-0441 was published on 2018-10-17 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:o:cisco:access_points:8.0\(140.0\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:access_points:8.2\(141.0\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:access_points:8.2\(151.0\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:access_points:8.3\(102.0\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:access_points:8.3\(112.0\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:access_points:8.3\(114.74\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:access_points:15.3\(3\)jd:*:*:*:*:*:*:*
cpe:2.3:o:cisco:access_points:*:*:*:*:*:*:*:*

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