Vulnerability Database

322,732

Total vulnerabilities in the database

CVE-2021-47854

DD-WRT version 45723 contains a buffer overflow vulnerability in the UPNP network discovery service that allows remote attackers to potentially execute arbitrary code. Attackers can send crafted M-SEARCH packets with oversized UUID payloads to trigger buffer overflow conditions on the target device.

  • Published: Jan 21, 2026
  • Updated: Jan 22, 2026
  • CVE: CVE-2021-47854
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWEs:

No affected software listed.