CVE-2021-1439 is a denial-of-service vulnerability in Cisco Aironet Series Access Points Software, specifically affecting the multicast DNS (mDNS) gateway feature. An unauthenticated, adjacent attacker can exploit insufficient input validation of mDNS traffic by sending a crafted packet, causing the access point to reboot. This vulnerability has a CVSS score of 7.4 (High), indicating a low-complexity attack with high impact on availability, requiring network adjacency. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:cisco:aironet_access_point_software:-:*:*:*:*:*:*:* | ||
>= 17.1, < 17.3.3CPE matchmatch criteria | cpe:2.3:o:cisco:catalyst_9800_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.