CVE-2021-21819 is a high-severity code execution vulnerability affecting D-Link DIR-3040 routers running firmware version 1.13B03, specifically within the Libcli Test Environment functionality. An authenticated attacker can exploit this flaw by sending specially crafted network requests, leading to arbitrary command execution on the device. While no public exploit code is readily available and it's not listed in the KEV catalog, the vulnerability has garnered some community discussion and media coverage, indicating awareness of the issue.
| 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:H/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 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.