CVE-2023-43239: D-Link Dir-816 a2 Firmware

Critical severity, CVSS 9.8. EPSS: 13.3% chance of exploitation in the next 30 days.

D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter flag_5G in showMACfilterMAC.

Affected products

• D-Link Dir-816 a2 Firmware: version 1.10cnb05 only

Published 2023-09-21. Last modified 2026-06-17.