CVE-2026-4211 - Vulnerability Analysis

Overview

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.

Severity & Score

Severity: High

CVSS Score: 8.8

EPSS Score: 4.5%(Probability of exploitation in next 30 days)

References

Social Media Activity(2 posts)

TheHackerWire

@thehackerwire

Mar 16, 2026

🟠 CVE-2026-4211 - High (8.8) 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 ... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-4211/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

View original post