Vulnerability · Published Mar 12, 2026 · Assigned by VulDB
CVE-2026-3978D-Link DIR-513 formEasySetupWizard3 stack-based overflow
High 8.8
In plain English
A high-severity stack buffer overflow in DIR-513 from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.7%top 45.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-350413 | D-Link DIR-513 formEasySetupWizard3 stack-based overflow vdb-entry, technical-description
- VDB-350413 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #769586 | D-Link DIR-513 1.10 Stack-based Buffer Overflow third-party-advisory
- https://github.com/Litengzheng/vul_db/blob/main/Dir513/vul_21/README.md exploit
- https://www.dlink.com/ product