CVE-2026-5211
HIGHD-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Del stack-based overflow
Title source: cnaDescription
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.
References (5)
Core 5
Core References
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-354347 | D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Del stack-based overflow
https://vuldb.com/vuln/354347
Signature, Permissions Required signature
permissions-required
VDB-354347 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/354347/cti
Third Party Advisory third-party-advisory
Submit #780434 | 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/780434
Product product
https://www.dlink.com/
Scores
CVSS v3
8.8
EPSS
0.0070
EPSS Percentile
48.2%
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
partial
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