Vulnerability details
CVE-2026-5212
D-Link DNR-202LD-Link DNR-322LD-Link DNR-326D-Link DNS-1100-4D-Link DNS-120D-Link DNS-1200-05
D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow
CVSS 4.0
8.7High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P |
| 8.8High | 3.1 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R |
| 8.8High | 3.0 | CVEProject cvelistV5 (CNA) (VulDB) | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R |
| 9.0High | 2.0 | CVEProject cvelistV5 (CNA) (VulDB) | AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| D-Link | DNR-202L | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNR-322L | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNR-326 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-1100-4 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-120 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-1200-05 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-1550-04 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-315L | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-320 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-320L | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-320LW | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-321 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-323 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-325 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-326 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-327L | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-340L | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-343 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-345 | 20260205 | CVEProject cvelistV5 (CNA) |
| D-Link | DNS-726-4 | 20260205 | CVEProject cvelistV5 (CNA) |
References and advisories
6- https://vuldb.com/vuln/354348 vdb-entrytechnical-description
- https://vuldb.com/vuln/354348/cti signaturepermissions-required
- https://vuldb.com/submit/780435 third-party-advisory
- https://vuldb.com/submit/780436 third-party-advisory
- https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_166/166.md exploit
- https://www.dlink.com/ product
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Details
- Published
- 2026-03-31
- Last updated
- 2026-04-03
- State
- Published
- Assigner (CNA)
- VulDB
Exploit prediction (EPSS)
0.75%
Probability of exploitation in 30 days
55.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-121Stack-based Buffer Overflow
- CWE-119Memory Corruption