CVE-2022-20945

Unauthenticated reload via malformed association frame

Published Sep 30, 2022 · Updated Nov 1, 2024

Denial of service in Cisco Catalyst 9100 Series Access Points allows remote attackers to reload the device via crafted 802.11 association requests. The access point insufficiently validates parameters in received association frames, allowing a malformed request to trigger an unexpected reload. The attacker must be adjacent to the wireless device and unauthenticated; the bounded consequence is service interruption without reported data disclosure or modification.

CVSS severity7.4
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Cisco Catalyst 9100 Series Access Points allows remote attackers to reload the device via crafted 802.11 association requests. The access point insufficiently validates parameters in received association frames, allowing a malformed request to trigger an unexpected reload. The attacker must be adjacent to the wireless device and unauthenticated; the bounded consequence is service interruption without reported data disclosure or modification.

The record

CVE
CVE-2022-20945
Published
Sep 30, 2022
Updated
Nov 1, 2024
Vendor
ClamAV
Product
Cisco Aironet Access Point Software (IOS XE Controller)
Classifications
CWE-120, T1498
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco Aironet Access Point Software (IOS XE Controller)version=n/a

Published CVSS scores

7.4Cisco Systems, Inc.CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
6.5NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size
T1498Network Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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