CVE-2026-3978: high-severity vulnerability in D-Link DIR-513
D-Link DIR-513 formEasySetupWizard3 stack-based overflow
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.7%
A vulnerability was detected in D-Link DIR-513 1.10. The impacted element is an unknown function of the file /goform/formEasySetupWizard3. The manipulation of the argument wan_connected results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now public and may be used.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
D-Link · DIR-513Related CVEs — D-Link DIR-513
In the same product, most dangerous first.
CVE-2025-8159HIGHD-Link DIR-513 HTTP POST Request formLanguageChange stack-based overflowEPSS 20.6%CVE-2025-8184HIGHD-Link DIR-513 HTTP POST Request formSetWanL2TPtriggers formSetWanL2TPcallback stack-based overflowEPSS 15.4%CVE-2025-7945HIGHD-Link DIR-513 formSetWanDhcpplus buffer overflowEPSS 7.1%CVE-2026-4465MEDIUMD-Link DIR-513 formSysCmd os command injectionEPSS 3.5%CVE-2025-10792HIGHD-Link DIR-513 formWPS buffer overflowEPSS 3.3%CVE-2026-6012HIGHD-Link DIR-513 POST Request formSetPassword buffer overflowEPSS 2.8%