CVE Catalog

CVE-2026-5212

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
0.74%

51th percentile - higher than 51% of all known CVEs

Summary

Multiple D-Link device models (including 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, DNS-1550-04) up to version 20260205 contain a stack-based buffer overflow vulnerability in the Webdav_Upload_File function of /cgi-bin/webdav_mgr.cgi via the f_file argument. The attack can be performed remotely and the exploit is publicly available.

Risk Assessment

An attacker can remotely trigger a buffer overflow, potentially leading to arbitrary code execution or device crash. The publicly available exploit increases the risk of rapid exploitation.

Recommendation

Check if D-Link has released a patch for these models. If not, consider decommissioning the devices or isolating them from the production network.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS