CVE-2022-37134: D-Link Dir-816 Firmware

Critical severity, CVSS 9.8. EPSS: 21.7% chance of exploitation in the next 30 days.

D-link DIR-816 A2_v1.10CNB04.img is vulnerable to Buffer Overflow via /goform/form2Wan.cgi. When wantype is 3, l2tp_usrname will be decrypted by base64, and the result will be stored in v94, which does not check the size of l2tp_usrname, resulting in stack overflow.

Affected products

• D-Link Dir-816 Firmware: version 1.10cnb04 only

Published 2022-08-22. Last modified 2026-06-17.