CVE-2020-3560
highpriority · track · 34EPSS 0.014 · 73 %ileEURUUSEPSS · scored 2026-10-27
A vulnerability in Cisco Aironet Access Points (APs) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) on an affected device. The vulnerability is due to improper resource management while processing specific packets. An attacker could exploit this vulnerability by sending a series of crafted UDP packets to a specific port on an affected device. A successful exploit could either allow the attacker to tear down the connection between the AP and the wireless LAN controller, resulting in the affected device not being able to process client traffic, or cause the vulnerable device to reload, triggering a DoS condition. After the attack, the affected device should automatically recover its normal functions without manual intervention.
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 - FixedCisco Aironet Access Point Software (IOS XE Controller)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Business Wireless 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.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (20)
Products and version ranges known to be affected.
- cisco aironet access point software= 17.1.2.6nvdUScpe:2.3:a:cisco:aironet_access_point_software:*:*:*:*:*:*:*:*
- cisco aironet access point software= 17.1.2.9nvdUScpe:2.3:a:cisco:aironet_access_point_software:*:*:*:*:*:*:*:*
- cisco aironet access point software= 17.2.0.37nvdUScpe:2.3:a:cisco:aironet_access_point_software:*:*:*:*:*:*:*:*
- cisco aironet access point software= 8.10(105.0)nvdUScpe:2.3:a:cisco:aironet_access_point_software:*:*:*:*:*:*:*:*
- cisco aironet access point software= 8.10(105.4)nvdUScpe:2.3:a:cisco:aironet_access_point_software:*:*:*:*:*:*:*:*
- cisco aironet access point software= 8.5(154.27)nvdUScpe:2.3:a:cisco:aironet_access_point_software:*:*:*:*:*:*:*:*
- cisco aironet access point software= 8.8(125.0)nvdUScpe:2.3:a:cisco:aironet_access_point_software:*:*:*:*:*:*:*:*
- cisco business access points10.0 → 10.1.1.0nvdUScpe:2.3:a:cisco:business_access_points:*:*:*:*:*:*:*:*
- cisco wireless lan controller8.9 → 8.10.112.0nvdUScpe:2.3:o:cisco:wireless_lan_controller:*:*:*:*:*:*:*:*
- cisco wireless lan controller software< 8.5.161.0nvdUScpe:2.3:o:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:*
- cisco wireless lan controller software8.6 → 8.8.130.0nvdUScpe:2.3:o:cisco:wireless_lan_controller_software:*:*:*:*:*:*:*:*
advisories (1)
Vendor and ecosystem advisories describing this.
- cisco-sa-aironet-dos-VHr2zG9yCisco Aironet Access Points UDP Flooding Denial of Service Vulnerability2020-09-24csaf · cisco_csafUS
A vulnerability in Cisco Aironet Access Points (APs) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) on an affected device. The vulnerability is due to improper resource management while processing specific packets. An attacker could exploit this vulnerability by sending a series of crafted UDP packets to a specific port on an affected device. A successful exploit could either allow the attacker to tear down the connection between the AP and the wireless LAN controller, resulting in the affected device not being able to process client traffic, or cause the vulnerable device to reload, triggering a DoS condition. After the attack, the affected device should automatically recover its normal functions without manual intervention. Cisco has released software updates that address the vulnerability described in this advisory. 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.
references (7)
External citations — patches, advisories, analysis.
- http://www.nsfocus.net/vulndb/49372cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-3560cnnvd
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aironet-dos-VHr2zG9ycnnvd
- https://vigilance.fr/vulnerability/Cisco-Aironet-denial-of-service-via-UDP-33418cnnvd
- https://www.auscert.org.au/bulletins/ESB-2020.3271/cnnvd
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aironet-dos-VHr2zG9yenisa_euvd
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aironet-dos-VHr2zG9yVendor Advisorynvd
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