CVE-2026-4211
HIGHD-Link DNS-1550-04 local_backup_mgr.cgi Local_Backup_Info stack-based overflow
Title source: cnaDescription
A weakness has been identified 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. Affected by this issue is the function Local_Backup_Info of the file /cgi-bin/local_backup_mgr.cgi. This manipulation of the argument f_idx causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
References (5)
Core 5
Core References
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-351122 | D-Link DNS-1550-04 local_backup_mgr.cgi Local_Backup_Info stack-based overflow
https://vuldb.com/?id.351122
Signature, Permissions Required signature
permissions-required
VDB-351122 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/?ctiid.351122
Third Party Advisory third-party-advisory
Submit #770441 | 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.770441
Product product
https://www.dlink.com/
Scores
CVSS v3
8.8
EPSS
0.0079
EPSS Percentile
51.4%
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-787
CWE-119
CWE-121
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 16, 2026
Tracked Since
Mar 16, 2026