CVE-2021-21818 describes a hard-coded password vulnerability within the Zebra IP Routing Manager functionality of D-Link DIR-3040 1.13B03 routers. This flaw allows an unauthenticated attacker to send a sequence of specially crafted network requests, leading to a denial of service. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, resulting in a complete loss of availability for affected devices. While there is no evidence of active exploitation (KEV: No) and no public exploit code (Metasploit, Nuclei, ExploitDB: None), the vulnerability has garnered some community attention and media coverage, indicating awareness within the cybersecurity landscape.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.13b03CPE matchmatch criteria | cpe:2.3:o:dlink:dir-3040_firmware:1.13b03:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.