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CVE

CVE-2024-20354

A vulnerability in the handling of encrypted wireless frames of Cisco Aironet Access Point (AP) Software could allow an

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.

MEDIUM · CVSS 4.7 EPSS 0.0004
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0

Weakness Classification

Affected Products & Versions

7
cisco wireless lan controller software>= 8.5.171.0 and < 8.6.0.0
cisco wireless lan controller software>= 8.10.130.0 and < 8.10.190.81
cisco ios xe>= 16.12.4a and < 17.1.0
cisco ios xe>= 17.3.0 and < 17.3.9
cisco ios xe>= 17.4.0 and < 17.6.7
cisco ios xe>= 17.7.0 and < 17.9.5
cisco ios xe>= 17.10.0 and < 17.12.2

Scoring & Timeline

4.7
MEDIUM · CVSS v3.1 · psirt@cisco.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Mar 2024 · 05:15 PM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

Vendor Advisories

1
cisco-csafcisco-sa-airo-ap-dos-PPPtcVW
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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