🛡️ CVE-2026-4211
🟠 CVSS 8.8 — High ⚠️ Exploit Public CWE-119 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-119
Public Exploit ⚠️ Yes
Source NVD
Published 2026-03-16
Updated 2026-06-02
Modified 2026-03-19
Fix URL N/A

Affected Packages

Software From version Fixed in
dnr-202l-firmware 2026-02-05
dnr-326-firmware 2026-02-05
dns-1100-4-firmware 2026-02-05
dns-120-firmware 2026-02-05
dns-1200-05-firmware 2026-02-05
dns-1550-04-firmware 2026-02-05
dns-315l-firmware 2026-02-05
dns-320-firmware 2026-02-05
dns-320l-firmware 2026-02-05
dns-320lw-firmware 2026-02-05
dns-321-firmware 2026-02-05
dns-322l-firmware 2026-02-05
dns-323-firmware 2026-02-05
dns-325-firmware 2026-02-05
dns-326-firmware 2026-02-05
dns-327l-firmware 2026-02-05
dns-340l-firmware 2026-02-05
dns-343-firmware 2026-02-05
dns-345-firmware 2026-02-05
dns-726-4-firmware 2026-02-05

References

Permissions Required, VDB Entry https://vuldb.com/?ctiid.351122
Third Party Advisory, VDB Entry https://vuldb.com/?id.351122
Third Party Advisory, VDB Entry https://vuldb.com/?submit.770441

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