CVE-2021-43722 is a critical buffer overflow vulnerability affecting D-Link DIR-645 1.03 A1 routers, specifically within the hnap_main function's cgibin handler due to unbounded sprintf usage on the soapaction header. With a CVSS score of 9.8, this vulnerability allows for unauthenticated, remote exploitation with high impact on confidentiality, integrity, and availability. Despite its severity, there is no public exploit code available (Metasploit, Nuclei, ExploitDB), it is not listed in CISA's KEV catalog, and there is no community discussion or media coverage indicating active exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.03CPE matchmatch criteria | cpe:2.3:o:dlink:dir-645_firmware:1.03:*:*:*:*:*:*:* |
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.