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CVE-2024-20354

HIGHCVSS 7.4/10EPSS 0.29%

Last modified

CVE-2024-20354 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. A vulnerability in the handling of encrypted wireless frames of Cisco Aironet Access Point (AP) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. This vulnerability is due to incomplete cleanup of resources when dropping certain malformed frames. An attacker could exploit this vulnerability by connecting as a wireless client to an affected AP and sending specific malformed frames over the wireless connection. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

Description

A vulnerability in the handling of encrypted wireless frames of Cisco Aironet Access Point (AP) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. This vulnerability is due to incomplete cleanup of resources when dropping certain malformed frames. An attacker could exploit this vulnerability by connecting as a wireless client to an affected AP and sending specific malformed frames over the wireless connection. A successful exploit could allow the attacker to cause degradation of service to other clients, which could potentially lead to a complete DoS condition.

Metrics

CVSS 3.1
7.4/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS Probability
0.29%

20.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoWireless Lan Controller Software>= 8.5.171.0, < 8.6.0.0
CiscoWireless Lan Controller Software>= 8.10.130.0, < 8.10.190.81
CiscoIos Xe>= 16.12.4a, < 17.1.0
CiscoIos Xe>= 17.3.0, < 17.3.9
CiscoIos Xe>= 17.4.0, < 17.6.7
CiscoIos Xe>= 17.7.0, < 17.9.5
CiscoIos Xe>= 17.10.0, < 17.12.2

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2024-20354?
A vulnerability in the handling of encrypted wireless frames of Cisco Aironet Access Point (AP) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. This vulnerability is due to incomplete cleanup of resources when dropping certain malformed frames. An attacker could exploit this vulnerability by connecting as a wireless client to an affected AP and sending specific malformed frames over the wireless connection. A successful exploit could allow the attacker to cause degradation of service to other clients, which could potentially lead to a complete DoS condition.
How severe is CVE-2024-20354?
CVE-2024-20354 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.
How do I fix CVE-2024-20354?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-20354?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST