CVE-2020-3111 is a critical vulnerability in the Cisco Discovery Protocol (CDP) implementation on Cisco IP Phones, affecting numerous Cisco devices. An unauthenticated, adjacent attacker can exploit missing checks in CDP message processing to remotely execute code with root privileges or trigger a denial-of-service (DoS) condition by sending a crafted CDP packet. This vulnerability carries a CVSS score of 8.8 (HIGH) due to its low attack complexity, requiring only Layer 2 adjacency, and its potential for complete compromise (Confidentiality, Integrity, Availability). While not listed on the KEV catalog, its high media coverage and community discussion indicate significant awareness, though no public exploit code (Metasploit, Nuclei, ExploitDB) is currently available.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 12.7\(1\)CPE matchmatch criteria | cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:*:*:*:*:*:*:*:* | ||
< 11.3\(1\)sr1CPE matchmatch criteria | cpe:2.3:o:cisco:ip_conference_phone_7832_with_multiplatform_firmware:*:*:*:*:*:*:*:* | ||
< 12.7\(1\)CPE matchmatch criteria | cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:*:*:*:*:*:*:*:* | ||
< 11.3\(1\)sr1CPE matchmatch criteria | cpe:2.3:o:cisco:ip_conference_phone_8832_with_multiplatform_firmware:*:*:*:*:*:*:*:* | ||
< 11.3\(1\)sr1CPE matchmatch criteria | cpe:2.3:o:cisco:ip_phone_6821_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No social media mentions found for this CVE.
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.
The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.