CVE-2026-3978
HIGHCVSS 8.8/10EPSS 0.71%
Last modified
CVE-2026-3978 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A vulnerability was detected in D-Link DIR-513 1.10. The impacted element is an unknown function of the file /goform/formEasySetupWizard3. EPSS estimates a 0.71% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Dlink | Dir-513 Firmware | 1.10 |
References
- https://github.com/Litengzheng/vul_db/blob/main/Dir513/vul_21/README.mdExploit, Third Party Advisory
- https://vuldb.com/?ctiid.350413Permissions Required, VDB Entry
- https://vuldb.com/?id.350413Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.769586Third Party Advisory, VDB Entry
- https://www.dlink.com/Product
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-3978?
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.
How severe is CVE-2026-3978?
CVE-2026-3978 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.
How do I fix CVE-2026-3978?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-3978?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST