CVE-2026-5212

HIGH

D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow

Title source: cna

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.

References (6)

Core 6

Core References

Exploit exploit

https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_166/166.md

View Exploit ZIP pw:eip

Vdb Entry, Technical Description vdb-entry technical-description

VDB-354348 | D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow

https://vuldb.com/vuln/354348

Signature, Permissions Required signature permissions-required

VDB-354348 | CTI Indicators (IOB, IOC, IOA)

https://vuldb.com/vuln/354348/cti

Third Party Advisory third-party-advisory

Submit #780435 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Stack-based Buffer Overflow

https://vuldb.com/submit/780435

Third Party Advisory third-party-advisory

Submit #780436 | D-Link DNS-120/202L/315L/320/320L/320LW/321/322L/323/325/326/327L/326/340L/343/345/726-4/1100-4/1200-05/1550-04 up to 20260205 Stack-based Buffer Overflow (Duplicate)

https://vuldb.com/submit/780436

Product product

https://www.dlink.com/

Scores

CVSS v3 8.8

EPSS 0.0074

EPSS Percentile 49.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-119 CWE-121 CWE-787

Status published

Products (40)

D-Link/DNR-202L 20260205

D-Link/DNR-322L 20260205

D-Link/DNR-326 20260205

D-Link/DNS-1100-4 20260205

D-Link/DNS-120 20260205

D-Link/DNS-1200-05 20260205

D-Link/DNS-1550-04 20260205

D-Link/DNS-315L 20260205

D-Link/DNS-320 20260205

D-Link/DNS-320L 20260205

... and 30 more

Published Mar 31, 2026

Tracked Since Apr 01, 2026