CVE-2021-34861 is a critical stack-based buffer overflow vulnerability affecting D-Link DAP-2020 1.01rc001 routers, specifically within the webproc endpoint on TCP port 80. This flaw allows unauthenticated, network-adjacent attackers to execute arbitrary code with root privileges due to insufficient validation of user-supplied data length. With a CVSS score of 8.8 (High), it presents a significant risk, requiring no user interaction or authentication for exploitation. While no public exploit code (Metasploit, Nuclei, ExploitDB) or active exploitation (KEV) has been observed, and community discussion is minimal, the potential for full system compromise remains high.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.01CPE matchmatch criteria | cpe:2.3:o:dlink:dap-2020_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
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.
Remediation records are not available for this CVE.