CVE-2021-28839 is a Null Pointer Dereference vulnerability affecting multiple D-Link DAP series access points, including models like the DAP-2310, DAP-2330, and DAP-2690. This flaw resides in the upload_certificate function of the sbin/httpd binary, triggered when a specific HTTP GET request causes the strrchr function to receive a NULL argument. Rated 7.5 HIGH on the CVSS scale, it presents a network-based attack with low complexity, requiring no user interaction or privileges, and can lead to high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
2.0.7.rc031CPE matchmatch criteria | cpe:2.3:o:dlink:dap-2310_firmware:2.0.7.rc031:*:*:*:*:*:*:* | ||
1.07.rc028CPE matchmatch criteria | cpe:2.3:o:dlink:dap-2330_firmware:1.07.rc028:*:*:*:*:*:*:* | ||
2.07.rc043CPE matchmatch criteria | cpe:2.3:o:dlink:dap-2360_firmware:2.07.rc043:*:*:*:*:*:*:* | ||
3.06.rc027CPE matchmatch criteria | cpe:2.3:o:dlink:dap-2553_firmware:3.06.rc027:*:*:*:*:*:*:* | ||
1.13.rc074CPE matchmatch criteria | cpe:2.3:o:dlink:dap-2660_firmware:1.13.rc074:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/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.
No media coverage found for this CVE.
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.