CVE-2026-4214
D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Setting stack-based overflow
HIGH 8.7
At a glance
- Source
- NVD
- EPSS
- EPSS 0.82 % · percentile 57 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- VulDB
- NVD status
- Analyzed
Description
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 issue affects the function UPnP_AV_Server_Path_Setting of the file /cgi-bin/app_mgr.cgi. Executing a manipulation can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been published and may be used.
Weaknesses (CWE)
- CWE-121 — Stack-based Buffer Overflow
- CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-787 — Out-of-bounds Write
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | HIGH 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P | VulDB |
| CVSS 3.1 | HIGH 8.8 | 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 | VulDB |
| CVSS 3.0 | HIGH 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| CVSS 2.0 | CRITICAL 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR | VulDB |
| CVSS 4.0 | HIGH 7.4 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · cna@vuldb.com (Secondary) |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · cna@vuldb.com (Secondary) |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | HIGH 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C | NVD · cna@vuldb.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-12329
- GCVE · GCVE-0-2026-4214
Affected configurations (NVD CPE)
cpe:2.3:o:dlink:dnr-202l_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dnr-326_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-1100-4_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-120_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-1200-05_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-1550-04_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-315l_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-320_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-320l_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-320lw_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-321_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-322l_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-323_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-325_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-326_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-327l_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-340l_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-343_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-345_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05cpe:2.3:o:dlink:dns-726-4_firmware:*:*:*:*:*:*:*:*≤ 2026-02-05
Affected products
| Product | Versions |
|---|---|
| D-Link · DNS-120 | affected 20260205 |
| D-Link · DNR-202L | affected 20260205 |
| D-Link · DNS-315L | affected 20260205 |
| D-Link · DNS-320 | affected 20260205 |
| D-Link · DNS-320L | affected 20260205 |
| D-Link · DNS-320LW | affected 20260205 |
| D-Link · DNS-321 | affected 20260205 |
| D-Link · DNR-322L | affected 20260205 |
| D-Link · DNS-323 | affected 20260205 |
| D-Link · DNS-325 | affected 20260205 |
| D-Link · DNS-326 | affected 20260205 |
| D-Link · DNS-327L | affected 20260205 |
| D-Link · DNR-326 | affected 20260205 |
| D-Link · DNS-340L | affected 20260205 |
| D-Link · DNS-343 | affected 20260205 |
| D-Link · DNS-345 | affected 20260205 |
| D-Link · DNS-726-4 | affected 20260205 |
| D-Link · DNS-1100-4 | affected 20260205 |
| D-Link · DNS-1200-05 | affected 20260205 |
| D-Link · DNS-1550-04 | affected 20260205 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |