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Vulnerability record · CVE-2023-43237 · published 21 September 2023

CVE-2023-43237: Dlink dir-816 a2 firmware out-of-bounds write vulnerability

Dlink · Dir 816 A2 Firmware

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

9.8 CVSS 3.1 Critical EPSS 14% · top 3.5% CWE-787 · Out-of-bounds writeCWE-121 · Stack-based buffer overflow
9.8CVSS 3.1 base score
14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/peris-navince/founded-0-days/blob/main/Dlink/816/setMAC/1.md ExploitThird Party Advisory
https://www.dlink.com/en/security-bulletin/ Vendor Advisory
https://github.com/peris-navince/founded-0-days/blob/main/Dlink/816/setMAC/1.md ExploitThird Party Advisory
https://www.dlink.com/en/security-bulletin/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-0921Dlink dir-816 a2 firmware os command injection vulnerabilityA vulnerability has been found in D-Link DIR-816 A2 1.10CNB04 and classified as critical. Affected by this vulnerability is an unknown functionality …EPSS 38%9.8CVE-2023-43236Dlink dir-816 a2 firmware out-of-bounds write vulnerabilityD-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter statuscheckpppoeuser in dir_setWanWifi.EPSS 1.1%9.8CVE-2023-43238Dlink dir-816 a2 firmware out-of-bounds write vulnerabilityD-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter nvmacaddr in form2Dhcpip.cgi.EPSS 1.3%9.8CVE-2023-43239Dlink dir-816 a2 firmware out-of-bounds write vulnerabilityD-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter flag_5G in showMACfilterMAC.EPSS 14%9.8CVE-2023-43240Dlink dir-816 a2 firmware out-of-bounds write vulnerabilityD-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter sip_address in ipportFilter.EPSS 14%9.8CVE-2018-17063Dlink dir-816 a2 firmware os command injection vulnerabilityAn issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. An HTTP request parameter is used in command string construction within the handler fu…EPSS 4.1%9.8CVE-2018-17064Dlink dir-816 a2 firmware os command injection vulnerabilityAn issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. An HTTP request parameter is used in command string construction within the handler fu…EPSS 7.4%9.8CVE-2018-17065Dlink dir-816 a2 firmware out-of-bounds write vulnerabilityAn issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. Within the handler function of the /goform/DDNS route, a very long password could lead…EPSS 1.9%

Source: NIST National Vulnerability Database (record CVE-2023-43237), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.