CVE-2021-1439
Cisco Aironet Access Points FlexConnect Multicast DNS Denial of Service Vulnerability
- State
- Published
- Severity
- 7.4 High
- Published
- Mar 24, 2021
- Updated
- Nov 8, 2024
- Reserved
- Nov 13, 2020
Description
A vulnerability in the multicast DNS (mDNS) gateway feature of Cisco Aironet Series Access Points Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of incoming mDNS traffic. An attacker could exploit this vulnerability by sending a crafted mDNS packet to an affected device through a wireless network that is configured in FlexConnect local switching mode or through a wired network on a configured mDNS VLAN. A successful exploit could allow the attacker to cause the access point (AP) to reboot, resulting in a DoS condition.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.4 High | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | cisco |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Cisco Aironet Access Point Software (IOS XE Controller)Cisco |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.