Critical severity · published Mar 15, 2026
CVE-2026-4182
D-Link DIR-816 goahead form2Wl5RepeaterStep2.cgi stack-based overflow
9.8
CVSS
1.1%
EPSS
No
On KEV
Description
A weakness has been identified in D-Link DIR-816 1.10CNB05. This impacts an unknown function of the file /goform/form2Wl5RepeaterStep2.cgi of the component goahead. This manipulation of the argument key1/key2/key3/key4/pskValue causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. This vulnerability only affects products that are no longer supported by the maintainer.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
DIR-816 · D-Link
1.10CNB05 · source: vendor
DF
Dir-816 Firmware · Dlink
1.10cnb05 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-4182
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-4182
Exploit
https://github.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_86/86.md
Permissions Required
https://vuldb.com/?ctiid.351086
Third Party Advisory
https://vuldb.com/?id.351086
Third Party Advisory
https://vuldb.com/?submit.769830
Product
https://www.dlink.com/
More from DIR-816
9.8
CVE-2026-4184
D-Link DIR-816 goahead form2Wl5BasicSetup.cgi stack-based overflow
9.8
CVE-2026-4183
D-Link DIR-816 goahead form2WlanBasicSetup.cgi stack-based overflow
9.8
CVE-2026-4181
D-Link DIR-816 goahead form2RepeaterStep2.cgi stack-based overflow
9.8
CVE-2026-4180
D-Link DIR-816 goahead redirect.asp access control
9.8
CVE-2025-5630
D-Link DIR-816 form2lansetup.cgi stack-based overflow