CVE-2020-3509 describes a denial-of-service vulnerability in Cisco IOS XE Software for cBR-8 Converged Broadband Routers. This flaw, stemming from insufficient error handling during DHCPv4 message parsing, allows an unauthenticated, remote attacker to crash the device's supervisor by sending a malicious DHCPv4 message to a WAN interface. With a CVSS score of 8.6 (HIGH), the vulnerability has a network attack vector, low attack complexity, and high impact on availability, potentially leading to a device reload. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
16.7\(1\)CPE matchmatch criteria | cpe:2.3:o:cisco:ios_xe:16.7\(1\):*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.