CVE-2026-4211
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.
- Score
- CVSS 3.1 9.8 Critical
- Status
- Analyzed - cna@vuldb.com
- Published
- 2026-03-16
- Last modified
- 2026-03-16
- Weaknesses
- CWE-119, CWE-121, CWE-787
Affected products
- Dnr-202l (D-link)
- Dnr-322l (D-link)
- Dnr-326 (D-link)
- Dns-1100-4 (D-link)
- Dns-120 (D-link)
- Dns-1200-05 (D-link)
- Dns-1550-04 (D-link)
- Dns-315l (D-link)
- Dns-320 (D-link)
- Dns-320l (D-link)
- Dns-320lw (D-link)
- Dns-321 (D-link)
- Dns-323 (D-link)
- Dns-325 (D-link)
- Dns-326 (D-link)
- Dns-327l (D-link)
- Dns-340l (D-link)
- Dns-343 (D-link)
- Dns-345 (D-link)
- Dns-726-4 (D-link)
- Dnr-202l Firmware (Dlink)
- Dnr-326 Firmware (Dlink)
- Dns-1100-4 Firmware (Dlink)
- Dns-1200-05 Firmware (Dlink)
- Dns-120 Firmware (Dlink)
- Dns-1550-04 Firmware (Dlink)
- Dns-315l Firmware (Dlink)
- Dns-320 Firmware (Dlink)
- Dns-320l Firmware (Dlink)
- Dns-320lw Firmware (Dlink)
- Dns-321 Firmware (Dlink)
- Dns-322l Firmware (Dlink)
- Dns-323 Firmware (Dlink)
- Dns-325 Firmware (Dlink)
- Dns-326 Firmware (Dlink)
- Dns-327l Firmware (Dlink)
- Dns-340l Firmware (Dlink)
- Dns-343 Firmware (Dlink)
- Dns-345 Firmware (Dlink)
- Dns-726-4 Firmware (Dlink)
References
- https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_160/160.md
- https://vuldb.com/?ctiid.351122
- https://vuldb.com/?id.351122
- https://vuldb.com/?submit.770441
- https://www.dlink.com/
