CVE-2021-33270 is a critical stack buffer overflow vulnerability affecting D-Link DIR-809 devices with firmware through DIR-809Ax_FW1.12WWB03_20190410. This flaw allows an unauthenticated attacker to execute arbitrary code or cause a denial of service by sending a specially crafted POST request to the /formAdvFirewall endpoint. With a CVSS score of 9.8, it poses a severe risk due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness among researchers.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.12wwb03CPE matchmatch criteria | cpe:2.3:o:dlink:dir-809_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.