High 8.8Published Mar 31, 2026

CVE-2026-5211D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Del stack-based overflow

Updated under an hour ago (Oct 26, 2026, 1:10 PM ET)

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It affects D-Link DNS-120 and 39 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for D-Link DNS-120

Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, CNA)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
Weakness (CWE): CWE-121, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Analyzed
Record last updated: Apr 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

D-Link DNS-120 d_link:dns_120 (from the name)	20260205	CNA record
D-Link DNR-202L d_link:dnr_202l (from the name)	20260205	CNA record
D-Link DNS-315L d_link:dns_315l (from the name)	20260205	CNA record
D-Link DNS-320 d_link:dns_320 (from the name)	20260205	CNA record
D-Link DNS-320L d_link:dns_320l (from the name)	20260205	CNA record
D-Link DNS-320LW d_link:dns_320lw (from the name)	20260205	CNA record
D-Link DNS-321 d_link:dns_321 (from the name)	20260205	CNA record
D-Link DNR-322L d_link:dnr_322l (from the name)	20260205	CNA record
D-Link DNS-323 d_link:dns_323 (from the name)	20260205	CNA record
D-Link DNS-325 d_link:dns_325 (from the name)	20260205	CNA record
1–10 of 40

References

References

https://vuldb.com/vuln/354347	vdb-entry, technical-description, third-party-advisory
https://vuldb.com/vuln/354347/cti	signature, permissions-required, vdb-entry
https://vuldb.com/submit/780434	third-party-advisory, vdb-entry
https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_165/165.md	exploit, third-party-advisory
https://www.dlink.com/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.