CVE-2026-5211

HIGH 8.8

D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Del stack-based overflow

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

A flaw 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 vulnerability affects the function UPnP_AV_Server_Path_Del of the file /cgi-bin/app_mgr.cgi. Executing a manipulation of the argument f_dir can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been published and may be used.

CWE	CWE-121 CWE-119
Vendor	d-link
Product	dns-120
Published	Mar 31, 2026
Last Updated	Apr 1, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

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

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/354347 vuldb.com: https://vuldb.com/vuln/354347/cti vuldb.com: https://vuldb.com/submit/780434 github.com: https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_165/165.md dlink.com: https://www.dlink.com/

Credits

🔍 Ziyue Xie (VulDB User)