# CVE-2026-5212

## Summary

- **CVE ID:** CVE-2026-5212
- **Severity:** HIGH
- **CVSS Score:** 9 (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)
- **CWE:** CWE-121, CWE-119
- **Published:** Mar 31, 2026
- **Last Modified:** Apr 3, 2026

## 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.

## Affected Products

- D-Link — DNS-120 (20260205)
- D-Link — DNR-202L (20260205)
- D-Link — DNS-315L (20260205)
- D-Link — DNS-320 (20260205)
- D-Link — DNS-320L (20260205)
- D-Link — DNS-320LW (20260205)
- D-Link — DNS-321 (20260205)
- D-Link — DNR-322L (20260205)
- D-Link — DNS-323 (20260205)
- D-Link — DNS-325 (20260205)
- D-Link — DNS-326 (20260205)
- D-Link — DNS-327L (20260205)
- D-Link — DNR-326 (20260205)
- D-Link — DNS-340L (20260205)
- D-Link — DNS-343 (20260205)
- D-Link — DNS-345 (20260205)
- D-Link — DNS-726-4 (20260205)
- D-Link — DNS-1100-4 (20260205)
- D-Link — DNS-1200-05 (20260205)
- D-Link — DNS-1550-04 (20260205)

## References

- [CNA](https://vuldb.com/vuln/354348)
- [CNA](https://vuldb.com/vuln/354348/cti)
- [CNA](https://vuldb.com/submit/780435)
- [CNA](https://vuldb.com/submit/780436)
- [CNA](https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_166/166.md)
- [CNA](https://www.dlink.com/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.74%
- **EPSS Percentile:** 52.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._