CVE-2026-4182: critical vulnerability in D-Link DIR-816
D-Link DIR-816 goahead form2Wl5RepeaterStep2.cgi stack-based overflow
Published · Updated
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.3epss 1.9%
exploitation probability
1.9%top 21% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
D-Link · DIR-816public PoCs found — 1
cve_referencegithub.com/wudipjq/my_vuln/blob/main/D-Link7/vuln_86/86.mdunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — D-Link DIR-816
In the same product, most dangerous first.
CVE-2025-5623CRITICALD-Link DIR-816 qosClassifier stack-based overflowEPSS 18.5%CVE-2024-0717MEDIUMD-Link Good Line Router v2 HTTP GET Request devinfo information disclosureEPSS 18.2%CVE-2025-1392MEDIUMD-Link DIR-816 index.html cross site scriptingEPSS 8.7%CVE-2025-5620MEDIUMD-Link DIR-816 setipsec_config os command injectionEPSS 7.7%CVE-2025-5621MEDIUMD-Link DIR-816 qosClassifier os command injectionEPSS 7.5%CVE-2026-8346MEDIUMD-Link DIR-816 portForward command injectionEPSS 5.0%