CVE-2026-4211 PUBLISHED

D-Link DNS-1550-04 local_backup_mgr.cgi Local_Backup_Info stack-based overflow

Assigner: VulDB
Reserved: 15.03.2026 Published: 16.03.2026 Updated: 16.03.2026

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.

Metrics

CVSS Vector: 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
CVSS Score: 8.7

Product Status

Vendor D-Link
Product DNS-120
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNR-202L
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-315L
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-320
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-320L
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-320LW
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-321
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNR-322L
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-323
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-325
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-326
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-327L
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNR-326
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-340L
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-343
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-345
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-726-4
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-1100-4
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-1200-05
Versions
  • Version 20260205 is affected
Vendor D-Link
Product DNS-1550-04
Versions
  • Version 20260205 is affected

Credits

  • pjqwudi (VulDB User) reporter

References

Problem Types

  • Stack-based Buffer Overflow CWE
  • Memory Corruption CWE