Vulnerability Description
A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to execute arbitrary code with administrative privileges or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a logic error that occurs during the validation of CAPWAP packets. An attacker could exploit this vulnerability by sending a crafted CAPWAP packet to an affected device. A successful exploit could allow the attacker to execute arbitrary code with administrative privileges or cause the affected device to crash and reload, resulting in a DoS condition.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe | - |
| Cisco | Catalyst 9800 | - |
| Cisco | Catalyst 9800-40 | - |
| Cisco | Catalyst 9800-40 Wireless Controller | - |
| Cisco | Catalyst 9800-80 | - |
| Cisco | Catalyst 9800-80 Wireless Controller | - |
| Cisco | Catalyst 9800-Cl | - |
| Cisco | Catalyst 9800-L | - |
| Cisco | Catalyst 9800-L-C | - |
| Cisco | Catalyst 9800-L-F | - |
| Cisco | Catalyst 9800 Embedded Wireless Controller | - |
Related Weaknesses (CWE)
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-eVendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-eVendor Advisory
FAQ
What is CVE-2021-34770?
CVE-2021-34770 is a vulnerability with a CVSS score of 10.0 (CRITICAL). A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9000 Family Wireless Controllers could allow an unaut...
How severe is CVE-2021-34770?
CVE-2021-34770 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-34770?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco Catalyst 9800, Cisco Catalyst 9800-40, Cisco Catalyst 9800-40 Wireless Controller, Cisco Catalyst 9800-80.