Vulnerability Intelligence Report
D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow
CVE-2026-5212
A vulnerability has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. This issue affects the function Webdav_Upload_File of the file /cgi-bin/webdav_mgr.cgi. The manipulation of the argument f_file leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.
No Active Exploit Signals
CVSS Base Score
8.7
HIGH
EPSS Probability:0.74%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| D-Link | DNS-120 | 20260205 (affected) |
| D-Link | DNR-202L | 20260205 (affected) |
| D-Link | DNS-315L | 20260205 (affected) |
| D-Link | DNS-320 | 20260205 (affected) |
| D-Link | DNS-320L | 20260205 (affected) |
| D-Link | DNS-320LW | 20260205 (affected) |
| D-Link | DNS-321 | 20260205 (affected) |
| D-Link | DNR-322L | 20260205 (affected) |
| D-Link | DNS-323 | 20260205 (affected) |
| D-Link | DNS-325 | 20260205 (affected) |
| D-Link | DNS-326 | 20260205 (affected) |
| D-Link | DNS-327L | 20260205 (affected) |
| D-Link | DNR-326 | 20260205 (affected) |
| D-Link | DNS-340L | 20260205 (affected) |
| D-Link | DNS-343 | 20260205 (affected) |
| D-Link | DNS-345 | 20260205 (affected) |
| D-Link | DNS-726-4 | 20260205 (affected) |
| D-Link | DNS-1100-4 | 20260205 (affected) |
| D-Link | DNS-1200-05 | 20260205 (affected) |
| D-Link | DNS-1550-04 | 20260205 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.737%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulDB · Researcher · Switzerland |
| Reserved | 2026-03-31T10:29:30 |
| Published | 2026-03-31T20:15:13 |
| Last Updated | 2026-04-03T16:40:05 |
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